mirror of https://github.com/torvalds/linux.git
2078 Commits
| Author | SHA1 | Message | Date |
|---|---|---|---|
Rob Herring (Arm)
|
75f1f311d8 |
Revert "of: reserved-memory: Fix using wrong number of cells to get property 'alignment'"
This reverts commit
|
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Thomas Weißschuh
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e6649328dc |
of: address: Add kunit test for __of_address_resource_bounds()
The overflow checking has to deal with different datatypes and edgecases. Add a new kunit testcase to make sure it works correctly. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Link: https://lore.kernel.org/r/20250129-of-address-overflow-v3-1-95d1760ed791@linutronix.de Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
|
Linus Torvalds
|
2ab002c755 |
Driver core and debugfs updates
Here is the big set of driver core and debugfs updates for 6.14-rc1.
It's coming late in the merge cycle as there are a number of merge
conflicts with your tree now, and I wanted to make sure they were
working properly. To resolve them, look in linux-next, and I will send
the "fixup" patch as a response to the pull request.
Included in here is a bunch of driver core, PCI, OF, and platform rust
bindings (all acked by the different subsystem maintainers), hence the
merge conflict with the rust tree, and some driver core api updates to
mark things as const, which will also require some fixups due to new
stuff coming in through other trees in this merge window.
There are also a bunch of debugfs updates from Al, and there is at least
one user that does have a regression with these, but Al is working on
tracking down the fix for it. In my use (and everyone else's linux-next
use), it does not seem like a big issue at the moment.
Here's a short list of the things in here:
- driver core bindings for PCI, platform, OF, and some i/o functions.
We are almost at the "write a real driver in rust" stage now,
depending on what you want to do.
- misc device rust bindings and a sample driver to show how to use
them
- debugfs cleanups in the fs as well as the users of the fs api for
places where drivers got it wrong or were unnecessarily doing things
in complex ways.
- driver core const work, making more of the api take const * for
different parameters to make the rust bindings easier overall.
- other small fixes and updates
All of these have been in linux-next with all of the aforementioned
merge conflicts, and the one debugfs issue, which looks to be resolved
"soon".
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core and debugfs updates from Greg KH:
"Here is the big set of driver core and debugfs updates for 6.14-rc1.
Included in here is a bunch of driver core, PCI, OF, and platform rust
bindings (all acked by the different subsystem maintainers), hence the
merge conflict with the rust tree, and some driver core api updates to
mark things as const, which will also require some fixups due to new
stuff coming in through other trees in this merge window.
There are also a bunch of debugfs updates from Al, and there is at
least one user that does have a regression with these, but Al is
working on tracking down the fix for it. In my use (and everyone
else's linux-next use), it does not seem like a big issue at the
moment.
Here's a short list of the things in here:
- driver core rust bindings for PCI, platform, OF, and some i/o
functions.
We are almost at the "write a real driver in rust" stage now,
depending on what you want to do.
- misc device rust bindings and a sample driver to show how to use
them
- debugfs cleanups in the fs as well as the users of the fs api for
places where drivers got it wrong or were unnecessarily doing
things in complex ways.
- driver core const work, making more of the api take const * for
different parameters to make the rust bindings easier overall.
- other small fixes and updates
All of these have been in linux-next with all of the aforementioned
merge conflicts, and the one debugfs issue, which looks to be resolved
"soon""
* tag 'driver-core-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (95 commits)
rust: device: Use as_char_ptr() to avoid explicit cast
rust: device: Replace CString with CStr in property_present()
devcoredump: Constify 'struct bin_attribute'
devcoredump: Define 'struct bin_attribute' through macro
rust: device: Add property_present()
saner replacement for debugfs_rename()
orangefs-debugfs: don't mess with ->d_name
octeontx2: don't mess with ->d_parent or ->d_parent->d_name
arm_scmi: don't mess with ->d_parent->d_name
slub: don't mess with ->d_name
sof-client-ipc-flood-test: don't mess with ->d_name
qat: don't mess with ->d_name
xhci: don't mess with ->d_iname
mtu3: don't mess wiht ->d_iname
greybus/camera - stop messing with ->d_iname
mediatek: stop messing with ->d_iname
netdevsim: don't embed file_operations into your structs
b43legacy: make use of debugfs_get_aux()
b43: stop embedding struct file_operations into their objects
carl9170: stop embedding file_operations into their objects
...
|
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Linus Torvalds
|
9c5968db9e |
The various patchsets are summarized below. Plus of course many
indivudual patches which are described in their changelogs. - "Allocate and free frozen pages" from Matthew Wilcox reorganizes the page allocator so we end up with the ability to allocate and free zero-refcount pages. So that callers (ie, slab) can avoid a refcount inc & dec. - "Support large folios for tmpfs" from Baolin Wang teaches tmpfs to use large folios other than PMD-sized ones. - "Fix mm/rodata_test" from Petr Tesarik performs some maintenance and fixes for this small built-in kernel selftest. - "mas_anode_descend() related cleanup" from Wei Yang tidies up part of the mapletree code. - "mm: fix format issues and param types" from Keren Sun implements a few minor code cleanups. - "simplify split calculation" from Wei Yang provides a few fixes and a test for the mapletree code. - "mm/vma: make more mmap logic userland testable" from Lorenzo Stoakes continues the work of moving vma-related code into the (relatively) new mm/vma.c. - "mm/page_alloc: gfp flags cleanups for alloc_contig_*()" from David Hildenbrand cleans up and rationalizes handling of gfp flags in the page allocator. - "readahead: Reintroduce fix for improper RA window sizing" from Jan Kara is a second attempt at fixing a readahead window sizing issue. It should reduce the amount of unnecessary reading. - "synchronously scan and reclaim empty user PTE pages" from Qi Zheng addresses an issue where "huge" amounts of pte pagetables are accumulated (https://lore.kernel.org/lkml/cover.1718267194.git.zhengqi.arch@bytedance.com/). Qi's series addresses this windup by synchronously freeing PTE memory within the context of madvise(MADV_DONTNEED). - "selftest/mm: Remove warnings found by adding compiler flags" from Muhammad Usama Anjum fixes some build warnings in the selftests code when optional compiler warnings are enabled. - "mm: don't use __GFP_HARDWALL when migrating remote pages" from David Hildenbrand tightens the allocator's observance of __GFP_HARDWALL. - "pkeys kselftests improvements" from Kevin Brodsky implements various fixes and cleanups in the MM selftests code, mainly pertaining to the pkeys tests. - "mm/damon: add sample modules" from SeongJae Park enhances DAMON to estimate application working set size. - "memcg/hugetlb: Rework memcg hugetlb charging" from Joshua Hahn provides some cleanups to memcg's hugetlb charging logic. - "mm/swap_cgroup: remove global swap cgroup lock" from Kairui Song removes the global swap cgroup lock. A speedup of 10% for a tmpfs-based kernel build was demonstrated. - "zram: split page type read/write handling" from Sergey Senozhatsky has several fixes and cleaups for zram in the area of zram_write_page(). A watchdog softlockup warning was eliminated. - "move pagetable_*_dtor() to __tlb_remove_table()" from Kevin Brodsky cleans up the pagetable destructor implementations. A rare use-after-free race is fixed. - "mm/debug: introduce and use VM_WARN_ON_VMG()" from Lorenzo Stoakes simplifies and cleans up the debugging code in the VMA merging logic. - "Account page tables at all levels" from Kevin Brodsky cleans up and regularizes the pagetable ctor/dtor handling. This results in improvements in accounting accuracy. - "mm/damon: replace most damon_callback usages in sysfs with new core functions" from SeongJae Park cleans up and generalizes DAMON's sysfs file interface logic. - "mm/damon: enable page level properties based monitoring" from SeongJae Park increases the amount of information which is presented in response to DAMOS actions. - "mm/damon: remove DAMON debugfs interface" from SeongJae Park removes DAMON's long-deprecated debugfs interfaces. Thus the migration to sysfs is completed. - "mm/hugetlb: Refactor hugetlb allocation resv accounting" from Peter Xu cleans up and generalizes the hugetlb reservation accounting. - "mm: alloc_pages_bulk: small API refactor" from Luiz Capitulino removes a never-used feature of the alloc_pages_bulk() interface. - "mm/damon: extend DAMOS filters for inclusion" from SeongJae Park extends DAMOS filters to support not only exclusion (rejecting), but also inclusion (allowing) behavior. - "Add zpdesc memory descriptor for zswap.zpool" from Alex Shi "introduces a new memory descriptor for zswap.zpool that currently overlaps with struct page for now. This is part of the effort to reduce the size of struct page and to enable dynamic allocation of memory descriptors." - "mm, swap: rework of swap allocator locks" from Kairui Song redoes and simplifies the swap allocator locking. A speedup of 400% was demonstrated for one workload. As was a 35% reduction for kernel build time with swap-on-zram. - "mm: update mips to use do_mmap(), make mmap_region() internal" from Lorenzo Stoakes reworks MIPS's use of mmap_region() so that mmap_region() can be made MM-internal. - "mm/mglru: performance optimizations" from Yu Zhao fixes a few MGLRU regressions and otherwise improves MGLRU performance. - "Docs/mm/damon: add tuning guide and misc updates" from SeongJae Park updates DAMON documentation. - "Cleanup for memfd_create()" from Isaac Manjarres does that thing. - "mm: hugetlb+THP folio and migration cleanups" from David Hildenbrand provides various cleanups in the areas of hugetlb folios, THP folios and migration. - "Uncached buffered IO" from Jens Axboe implements the new RWF_DONTCACHE flag which provides synchronous dropbehind for pagecache reading and writing. To permite userspace to address issues with massive buildup of useless pagecache when reading/writing fast devices. - "selftests/mm: virtual_address_range: Reduce memory" from Thomas Weißschuh fixes and optimizes some of the MM selftests. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZ5a+cwAKCRDdBJ7gKXxA jtoyAP9R58oaOKPJuTizEKKXvh/RpMyD6sYcz/uPpnf+cKTZxQEAqfVznfWlw/Lz uC3KRZYhmd5YrxU4o+qjbzp9XWX/xAE= =Ib2s -----END PGP SIGNATURE----- Merge tag 'mm-stable-2025-01-26-14-59' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: "The various patchsets are summarized below. Plus of course many indivudual patches which are described in their changelogs. - "Allocate and free frozen pages" from Matthew Wilcox reorganizes the page allocator so we end up with the ability to allocate and free zero-refcount pages. So that callers (ie, slab) can avoid a refcount inc & dec - "Support large folios for tmpfs" from Baolin Wang teaches tmpfs to use large folios other than PMD-sized ones - "Fix mm/rodata_test" from Petr Tesarik performs some maintenance and fixes for this small built-in kernel selftest - "mas_anode_descend() related cleanup" from Wei Yang tidies up part of the mapletree code - "mm: fix format issues and param types" from Keren Sun implements a few minor code cleanups - "simplify split calculation" from Wei Yang provides a few fixes and a test for the mapletree code - "mm/vma: make more mmap logic userland testable" from Lorenzo Stoakes continues the work of moving vma-related code into the (relatively) new mm/vma.c - "mm/page_alloc: gfp flags cleanups for alloc_contig_*()" from David Hildenbrand cleans up and rationalizes handling of gfp flags in the page allocator - "readahead: Reintroduce fix for improper RA window sizing" from Jan Kara is a second attempt at fixing a readahead window sizing issue. It should reduce the amount of unnecessary reading - "synchronously scan and reclaim empty user PTE pages" from Qi Zheng addresses an issue where "huge" amounts of pte pagetables are accumulated: https://lore.kernel.org/lkml/cover.1718267194.git.zhengqi.arch@bytedance.com/ Qi's series addresses this windup by synchronously freeing PTE memory within the context of madvise(MADV_DONTNEED) - "selftest/mm: Remove warnings found by adding compiler flags" from Muhammad Usama Anjum fixes some build warnings in the selftests code when optional compiler warnings are enabled - "mm: don't use __GFP_HARDWALL when migrating remote pages" from David Hildenbrand tightens the allocator's observance of __GFP_HARDWALL - "pkeys kselftests improvements" from Kevin Brodsky implements various fixes and cleanups in the MM selftests code, mainly pertaining to the pkeys tests - "mm/damon: add sample modules" from SeongJae Park enhances DAMON to estimate application working set size - "memcg/hugetlb: Rework memcg hugetlb charging" from Joshua Hahn provides some cleanups to memcg's hugetlb charging logic - "mm/swap_cgroup: remove global swap cgroup lock" from Kairui Song removes the global swap cgroup lock. A speedup of 10% for a tmpfs-based kernel build was demonstrated - "zram: split page type read/write handling" from Sergey Senozhatsky has several fixes and cleaups for zram in the area of zram_write_page(). A watchdog softlockup warning was eliminated - "move pagetable_*_dtor() to __tlb_remove_table()" from Kevin Brodsky cleans up the pagetable destructor implementations. A rare use-after-free race is fixed - "mm/debug: introduce and use VM_WARN_ON_VMG()" from Lorenzo Stoakes simplifies and cleans up the debugging code in the VMA merging logic - "Account page tables at all levels" from Kevin Brodsky cleans up and regularizes the pagetable ctor/dtor handling. This results in improvements in accounting accuracy - "mm/damon: replace most damon_callback usages in sysfs with new core functions" from SeongJae Park cleans up and generalizes DAMON's sysfs file interface logic - "mm/damon: enable page level properties based monitoring" from SeongJae Park increases the amount of information which is presented in response to DAMOS actions - "mm/damon: remove DAMON debugfs interface" from SeongJae Park removes DAMON's long-deprecated debugfs interfaces. Thus the migration to sysfs is completed - "mm/hugetlb: Refactor hugetlb allocation resv accounting" from Peter Xu cleans up and generalizes the hugetlb reservation accounting - "mm: alloc_pages_bulk: small API refactor" from Luiz Capitulino removes a never-used feature of the alloc_pages_bulk() interface - "mm/damon: extend DAMOS filters for inclusion" from SeongJae Park extends DAMOS filters to support not only exclusion (rejecting), but also inclusion (allowing) behavior - "Add zpdesc memory descriptor for zswap.zpool" from Alex Shi introduces a new memory descriptor for zswap.zpool that currently overlaps with struct page for now. This is part of the effort to reduce the size of struct page and to enable dynamic allocation of memory descriptors - "mm, swap: rework of swap allocator locks" from Kairui Song redoes and simplifies the swap allocator locking. A speedup of 400% was demonstrated for one workload. As was a 35% reduction for kernel build time with swap-on-zram - "mm: update mips to use do_mmap(), make mmap_region() internal" from Lorenzo Stoakes reworks MIPS's use of mmap_region() so that mmap_region() can be made MM-internal - "mm/mglru: performance optimizations" from Yu Zhao fixes a few MGLRU regressions and otherwise improves MGLRU performance - "Docs/mm/damon: add tuning guide and misc updates" from SeongJae Park updates DAMON documentation - "Cleanup for memfd_create()" from Isaac Manjarres does that thing - "mm: hugetlb+THP folio and migration cleanups" from David Hildenbrand provides various cleanups in the areas of hugetlb folios, THP folios and migration - "Uncached buffered IO" from Jens Axboe implements the new RWF_DONTCACHE flag which provides synchronous dropbehind for pagecache reading and writing. To permite userspace to address issues with massive buildup of useless pagecache when reading/writing fast devices - "selftests/mm: virtual_address_range: Reduce memory" from Thomas Weißschuh fixes and optimizes some of the MM selftests" * tag 'mm-stable-2025-01-26-14-59' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (321 commits) mm/compaction: fix UBSAN shift-out-of-bounds warning s390/mm: add missing ctor/dtor on page table upgrade kasan: sw_tags: use str_on_off() helper in kasan_init_sw_tags() tools: add VM_WARN_ON_VMG definition mm/damon/core: use str_high_low() helper in damos_wmark_wait_us() seqlock: add missing parameter documentation for raw_seqcount_try_begin() mm/page-writeback: consolidate wb_thresh bumping logic into __wb_calc_thresh mm/page_alloc: remove the incorrect and misleading comment zram: remove zcomp_stream_put() from write_incompressible_page() mm: separate move/undo parts from migrate_pages_batch() mm/kfence: use str_write_read() helper in get_access_type() selftests/mm/mkdirty: fix memory leak in test_uffdio_copy() kasan: hw_tags: Use str_on_off() helper in kasan_init_hw_tags() selftests/mm: virtual_address_range: avoid reading from VM_IO mappings selftests/mm: vm_util: split up /proc/self/smaps parsing selftests/mm: virtual_address_range: unmap chunks after validation selftests/mm: virtual_address_range: mmap() without PROT_WRITE selftests/memfd/memfd_test: fix possible NULL pointer dereference mm: add FGP_DONTCACHE folio creation flag mm: call filemap_fdatawrite_range_kick() after IOCB_DONTCACHE issue ... |
|
Guo Weikang
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c6f239796b |
mm/memblock: add memblock_alloc_or_panic interface
Before SLUB initialization, various subsystems used memblock_alloc to allocate memory. In most cases, when memory allocation fails, an immediate panic is required. To simplify this behavior and reduce repetitive checks, introduce `memblock_alloc_or_panic`. This function ensures that memory allocation failures result in a panic automatically, improving code readability and consistency across subsystems that require this behavior. [guoweikang.kernel@gmail.com: arch/s390: save_area_alloc default failure behavior changed to panic] Link: https://lkml.kernel.org/r/20250109033136.2845676-1-guoweikang.kernel@gmail.com Link: https://lore.kernel.org/lkml/Z2fknmnNtiZbCc7x@kernel.org/ Link: https://lkml.kernel.org/r/20250102072528.650926-1-guoweikang.kernel@gmail.com Signed-off-by: Guo Weikang <guoweikang.kernel@gmail.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k] Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com> [s390] Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Linus Torvalds
|
647d69605c |
pci-v6.14-changes
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Merge tag 'pci-v6.14-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci updates from Bjorn Helgaas:
"Enumeration:
- Batch sizing of multiple BARs while memory decoding is disabled
instead of disabling/enabling decoding for each BAR individually;
this optimizes virtualized environments where toggling decoding
enable is expensive (Alex Williamson)
- Add host bridge .enable_device() and .disable_device() hooks for
bridges that need to configure things like Requester ID to StreamID
mapping when enabling devices (Frank Li)
- Extend struct pci_ecam_ops with .enable_device() and
.disable_device() hooks so drivers that use pci_host_common_probe()
instead of their own .probe() have a way to set the
.enable_device() callbacks (Marc Zyngier)
- Drop 'No bus range found' message so we don't complain when DTs
don't specify the default 'bus-range = <0x00 0xff>' (Bjorn Helgaas)
- Rename the drivers/pci/of_property.c struct of_pci_range to
of_pci_range_entry to avoid confusion with the global of_pci_range
in include/linux/of_address.h (Bjorn Helgaas)
Driver binding:
- Update resource request API documentation to encourage callers to
supply a driver name when requesting resources (Philipp Stanner)
- Export pci_intx_unmanaged() and pcim_intx() (always managed) so
callers of pci_intx() (which is sometimes managed) can explicitly
choose the one they need (Philipp Stanner)
- Convert drivers from pci_intx() to always-managed pcim_intx() or
never-managed pci_intx_unmanaged(): amd_sfh, ata (ahci, ata_piix,
pata_rdc, sata_sil24, sata_sis, sata_uli, sata_vsc), bnx2x, bna,
ntb, qtnfmac, rtsx, tifm_7xx1, vfio, xen-pciback (Philipp Stanner)
- Remove pci_intx_unmanaged() since pci_intx() is now always
unmanaged and pcim_intx() is always managed (Philipp Stanner)
Error handling:
- Unexport pcie_read_tlp_log() to encourage drivers to use PCI core
logging rather than building their own (Ilpo Järvinen)
- Move TLP Log handling to its own file (Ilpo Järvinen)
- Store number of supported End-End TLP Prefixes always so we can
read the correct number of DWORDs from the TLP Prefix Log (Ilpo
Järvinen)
- Read TLP Prefixes in addition to the Header Log in
pcie_read_tlp_log() (Ilpo Järvinen)
- Add pcie_print_tlp_log() to consolidate printing of TLP Header and
Prefix Log (Ilpo Järvinen)
- Quirk the Intel Raptor Lake-P PIO log size to accommodate vendor
BIOSes that don't configure it correctly (Takashi Iwai)
ASPM:
- Save parent L1 PM Substates config so when we restore it along with
an endpoint's config, the parent info isn't junk (Jian-Hong Pan)
Power management:
- Avoid D3 for Root Ports on TUXEDO Sirius Gen1 with old BIOS because
the system can't wake up from suspend (Werner Sembach)
Endpoint framework:
- Destroy the EPC device in devm_pci_epc_destroy(), which previously
didn't call devres_release() (Zijun Hu)
- Finish virtual EP removal in pci_epf_remove_vepf(), which
previously caused a subsequent pci_epf_add_vepf() to fail with
-EBUSY (Zijun Hu)
- Write BAR_MASK before iATU registers in pci_epc_set_bar() so we
don't depend on the BAR_MASK reset value being larger than the
requested BAR size (Niklas Cassel)
- Prevent changing BAR size/flags in pci_epc_set_bar() to prevent
reads from bypassing the iATU if we reduced the BAR size (Niklas
Cassel)
- Verify address alignment when programming iATU so we don't attempt
to write bits that are read-only because of the BAR size, which
could lead to directing accesses to the wrong address (Niklas
Cassel)
- Implement artpec6 pci_epc_features so we can rely on all drivers
supporting it so we can use it in EPC core code (Niklas Cassel)
- Check for BARs of fixed size to prevent endpoint drivers from
trying to change their size (Niklas Cassel)
- Verify that requested BAR size is a power of two when endpoint
driver sets the BAR (Niklas Cassel)
Endpoint framework tests:
- Clear pci-epf-test dma_chan_rx, not dma_chan_tx, after freeing
dma_chan_rx (Mohamed Khalfella)
- Correct the DMA MEMCPY test so it doesn't fail if the Endpoint
supports both DMA_PRIVATE and DMA_MEMCPY (Manivannan Sadhasivam)
- Add pci-epf-test and pci_endpoint_test support for capabilities
(Niklas Cassel)
- Add Endpoint test for consecutive BARs (Niklas Cassel)
- Remove redundant comparison from Endpoint BAR test because a > 1MB
BAR can always be exactly covered by iterating with a 1MB buffer
(Hans Zhang)
- Move and convert PCI Endpoint tests from tools/pci to Kselftests
(Manivannan Sadhasivam)
Apple PCIe controller driver:
- Convert StreamID mapping configuration from a bus notifier to the
.enable_device() and .disable_device() callbacks (Marc Zyngier)
Freescale i.MX6 PCIe controller driver:
- Add Requester ID to StreamID mapping configuration when enabling
devices (Frank Li)
- Use DWC core suspend/resume functions for imx6 (Frank Li)
- Add suspend/resume support for i.MX8MQ, i.MX8Q, and i.MX95 (Richard
Zhu)
- Add DT compatible string 'fsl,imx8q-pcie-ep' and driver support for
i.MX8Q series (i.MX8QM, i.MX8QXP, and i.MX8DXL) Endpoints (Frank
Li)
- Add DT binding for optional i.MX95 Refclk and driver support to
enable it if the platform hasn't enabled it (Richard Zhu)
- Configure PHY based on controller being in Root Complex or Endpoint
mode (Frank Li)
- Rely on dbi2 and iATU base addresses from DT via
dw_pcie_get_resources() instead of hardcoding them (Richard Zhu)
- Deassert apps_reset in imx_pcie_deassert_core_reset() since it is
asserted in imx_pcie_assert_core_reset() (Richard Zhu)
- Add missing reference clock enable or disable logic for IMX6SX,
IMX7D, IMX8MM (Richard Zhu)
- Remove redundant imx7d_pcie_init_phy() since
imx7d_pcie_enable_ref_clk() does the same thing (Richard Zhu)
Freescale Layerscape PCIe controller driver:
- Simplify by using syscon_regmap_lookup_by_phandle_args() instead
of syscon_regmap_lookup_by_phandle() followed by
of_property_read_u32_array() (Krzysztof Kozlowski)
Marvell MVEBU PCIe controller driver:
- Add MODULE_DEVICE_TABLE() to enable module autoloading (Liao Chen)
MediaTek PCIe Gen3 controller driver:
- Use clk_bulk_prepare_enable() instead of separate
clk_bulk_prepare() and clk_bulk_enable() (Lorenzo Bianconi)
- Rearrange reset assert/deassert so they're both done in the
*_power_up() callbacks (Lorenzo Bianconi)
- Document that Airoha EN7581 requires PHY init and power-on before
PHY reset deassert, unlike other MediaTek Gen3 controllers (Lorenzo
Bianconi)
- Move Airoha EN7581 post-reset delay from the en7581 clock .enable()
method to mtk_pcie_en7581_power_up() (Lorenzo Bianconi)
- Sleep instead of delay during Airoha EN7581 power-up, since this is
a non-atomic context (Lorenzo Bianconi)
- Skip PERST# assertion on Airoha EN7581 during probe and
suspend/resume to avoid a hardware defect (Lorenzo Bianconi)
- Enable async probe to reduce system startup time (Douglas Anderson)
Microchip PolarFlare PCIe controller driver:
- Set up the inbound address translation based on whether the
platform allows coherent or non-coherent DMA (Daire McNamara)
- Update DT binding such that platforms are DMA-coherent by default
and must specify 'dma-noncoherent' if needed (Conor Dooley)
Mobiveil PCIe controller driver:
- Convert mobiveil-pcie.txt to YAML and update 'interrupt-names'
and 'reg-names' (Frank Li)
Qualcomm PCIe controller driver:
- Add DT SM8550 and SM8650 optional 'global' interrupt for link
events (Neil Armstrong)
- Add DT 'compatible' strings for IPQ5424 PCIe controller (Manikanta
Mylavarapu)
- If 'global' IRQ is supported for detection of Link Up events, tell
DWC core not to wait for link up (Krishna chaitanya chundru)
Renesas R-Car PCIe controller driver:
- Avoid passing stack buffer as resource name (King Dix)
Rockchip PCIe controller driver:
- Simplify clock and reset handling by using bulk interfaces (Anand
Moon)
- Pass typed rockchip_pcie (not void) pointer to
rockchip_pcie_disable_clocks() (Anand Moon)
- Return -ENOMEM, not success, when pci_epc_mem_alloc_addr() fails
(Dan Carpenter)
Rockchip DesignWare PCIe controller driver:
- Use dll_link_up IRQ to detect Link Up and enumerate devices so
users don't have to manually rescan (Niklas Cassel)
- Tell DWC core not to wait for link up since the 'sys' interrupt is
required and detects Link Up events (Niklas Cassel)
Synopsys DesignWare PCIe controller driver:
- Don't wait for link up in DWC core if driver can detect Link Up
event (Krishna chaitanya chundru)
- Update ICC and OPP votes after Link Up events (Krishna chaitanya
chundru)
- Always stop link in dw_pcie_suspend_noirq(), which is required at
least for i.MX8QM to re-establish link on resume (Richard Zhu)
- Drop racy and unnecessary LTSSM state check before sending
PME_TURN_OFF message in dw_pcie_suspend_noirq() (Richard Zhu)
- Add struct of_pci_range.parent_bus_addr for devices that need their
immediate parent bus address, not the CPU address, e.g., to program
an internal Address Translation Unit (iATU) (Frank Li)
TI DRA7xx PCIe controller driver:
- Simplify by using syscon_regmap_lookup_by_phandle_args() instead of
syscon_regmap_lookup_by_phandle() followed by
of_parse_phandle_with_fixed_args() or of_property_read_u32_index()
(Krzysztof Kozlowski)
Xilinx Versal CPM PCIe controller driver:
- Add DT binding and driver support for Xilinx Versal CPM5
(Thippeswamy Havalige)
MicroSemi Switchtec management driver:
- Add Microchip PCI100X device IDs (Rakesh Babu Saladi)
Miscellaneous:
- Move reset related sysfs code from pci.c to pci-sysfs.c where other
similar code lives (Ilpo Järvinen)
- Simplify reset_method_store() memory management by using __free()
instead of explicit kfree() cleanup (Ilpo Järvinen)
- Constify struct bin_attribute for sysfs, VPD, P2PDMA, and the IBM
ACPI hotplug driver (Thomas Weißschuh)
- Remove redundant PCI_VSEC_HDR and PCI_VSEC_HDR_LEN_SHIFT (Dongdong
Zhang)
- Correct documentation of the 'config_acs=' kernel parameter
(Akihiko Odaki)"
* tag 'pci-v6.14-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (111 commits)
PCI: Batch BAR sizing operations
dt-bindings: PCI: microchip,pcie-host: Allow dma-noncoherent
PCI: microchip: Set inbound address translation for coherent or non-coherent mode
Documentation: Fix pci=config_acs= example
PCI: Remove redundant PCI_VSEC_HDR and PCI_VSEC_HDR_LEN_SHIFT
PCI: Don't include 'pm_wakeup.h' directly
selftests: pci_endpoint: Migrate to Kselftest framework
selftests: Move PCI Endpoint tests from tools/pci to Kselftests
misc: pci_endpoint_test: Fix IOCTL return value
dt-bindings: PCI: qcom: Document the IPQ5424 PCIe controller
dt-bindings: PCI: qcom,pcie-sm8550: Document 'global' interrupt
dt-bindings: PCI: mobiveil: Convert mobiveil-pcie.txt to YAML
PCI: switchtec: Add Microchip PCI100X device IDs
misc: pci_endpoint_test: Remove redundant 'remainder' test
misc: pci_endpoint_test: Add consecutive BAR test
misc: pci_endpoint_test: Add support for capabilities
PCI: endpoint: pci-epf-test: Add support for capabilities
PCI: endpoint: pci-epf-test: Fix check for DMA MEMCPY test
PCI: endpoint: pci-epf-test: Set dma_chan_rx pointer to NULL on error
PCI: dwc: Simplify config resource lookup
...
|
|
|
Linus Torvalds
|
f345fc7a07 |
Devicetree updates for v6.14:
DT Bindings:
- Add Bindings for QCom QCS615 UFS, QCom IPQ5424 DWC3 USB, NXP imx7d
MIPI DSI, QCom SM8750 PDC, QCom MSM8976 SRAM, QCom ipq6018 temp
sensor, QCom QCS8300 Power Domain Controller, QCom QCS615 Power Domain
Controller, QCom QCS615 APSS, QCom QCS615 qfprom, QCom QCS8300
remoteproc, Mediatek MT6328 PMIC, Allwinner A100 OPP, and NXP iMX35
GPT
- Convert Altera socfpga-system, raspberrypi,bcm2835-power to DT
schema
- Add Siflower vendor prefix
- Cleanup display, interrupt-controller, and UFS binding examples'
indentation
- Document preferred line wrapping (the same as the rest of the kernel)
DT Core:
- Add warning when of_property_read_bool() is used on non-boolean
properties
- Restore keeping bootloader DTB when booting with ACPI. Turns out some
x86 platforms relied on that. Shrug.
- Fix of_find_node_opts_by_path() handling of alias+path+options
- Fix resource bounds checking for empty resources
- A bunch of small fixes/cleanups all over from Zijun Hu
- Cleanups in bin_attribute handling
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Merge tag 'devicetree-for-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree updates from Rob Herring:
"DT Bindings:
- Add Bindings for QCom QCS615 UFS, QCom IPQ5424 DWC3 USB, NXP imx7d
MIPI DSI, QCom SM8750 PDC, QCom MSM8976 SRAM, QCom ipq6018 temp
sensor, QCom QCS8300 Power Domain Controller, QCom QCS615 Power
Domain Controller, QCom QCS615 APSS, QCom QCS615 qfprom, QCom
QCS8300 remoteproc, Mediatek MT6328 PMIC, Allwinner A100 OPP, and
NXP iMX35 GPT
- Convert Altera socfpga-system, raspberrypi,bcm2835-power to DT
schema
- Add Siflower vendor prefix
- Cleanup display, interrupt-controller, and UFS binding examples'
indentation
- Document preferred line wrapping (the same as the rest of the
kernel)
DT Core:
- Add warning when of_property_read_bool() is used on non-boolean
properties
- Restore keeping bootloader DTB when booting with ACPI. Turns out
some x86 platforms relied on that. Shrug.
- Fix of_find_node_opts_by_path() handling of alias+path+options
- Fix resource bounds checking for empty resources
- A bunch of small fixes/cleanups all over from Zijun Hu
- Cleanups in bin_attribute handling"
* tag 'devicetree-for-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (50 commits)
of: address: Fix empty resource handling in __of_address_resource_bounds()
of/fdt: Restore possibility to use both ACPI and FDT from bootloader
docs: dt-bindings: Document preferred line wrapping
dt-bindings: ufs: Correct indentation and style in DTS example
of: Correct element count for two arrays in API of_parse_phandle_with_args_map()
of: reserved-memory: Warn for missing static reserved memory regions
of: Do not expose of_alias_scan() and correct its comments
dt-bindings: ufs: qcom: Add UFS Host Controller for QCS615
dt-bindings: usb: qcom,dwc3: Add IPQ5424 to USB DWC3 bindings
dt-bindings: arm: coresight: Update the pattern of ete node name
of: Warn when of_property_read_bool() is used on non-boolean properties
device property: Split property reading bool and presence test ops
of/fdt: Check fdt_get_mem_rsv() error in early_init_fdt_scan_reserved_mem()
of: reserved-memory: Move an assignment to effective place in __reserved_mem_alloc_size()
of: reserved-memory: Do not make kmemleak ignore freed address
of: reserved-memory: Fix using wrong number of cells to get property 'alignment'
of: Remove a duplicated code block
of: property: Avoiding using uninitialized variable @imaplen in parse_interrupt_map()
of: Correct child specifier used as input of the 2nd nexus node
dt-bindings: interrupt-controller: ti,omap4-wugen-mpu: Add file extension
...
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Thomas Weißschuh
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15e2f65f2e |
of: address: Fix empty resource handling in __of_address_resource_bounds()
"resource->end" needs to always be equal to "resource->start + size - 1".
The previous version of the function did not perform the "- 1" in case
of an empty resource.
Also make sure to allow an empty resource at address 0.
Reported-by: Basharath Hussain Khaja <basharath@couthit.com>
Closes: https://lore.kernel.org/lkml/20250108140414.13530-1-basharath@couthit.com/
Fixes:
|
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Dmytro Maluka
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14bce187d1 |
of/fdt: Restore possibility to use both ACPI and FDT from bootloader
There are cases when the bootloader provides information to the kernel in both ACPI and DTB, not interchangeably. One such use case is virtual machines in Android. When running on x86, the Android Virtualization Framework (AVF) boots VMs with ACPI like it is usually done on x86 (i.e. the virtual LAPIC, IOAPIC, HPET, PCI MMCONFIG etc are described in ACPI) but also passes various AVF-specific boot parameters in DTB. This allows reusing the same implementations of various AVF components on both arm64 and x86. Commit |
|
Frank Li
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4dbf0155df |
of: address: Add parent_bus_addr to struct of_pci_range
Add a new field called 'parent_bus_addr' to struct of_pci_range to use
when retrieving parent bus address information.
Refer to the diagram below to better understand that the bus fabric in
some systems (like i.MX8QXP) does not always use a 1:1 address map
between input and output.
Currently, many controller drivers use the cpu_addr_fixup() callback
that would often hardcode address translation directly in the code, e.g.,
"cpu_addr & CDNS_PLAT_CPU_TO_BUS_ADDR" or "cpu_addr + BUS_IATU_OFFSET",
etc., even though those translations *should* be described via DT.
However, the cpu_addr_fixup() can be eliminated if DT correctly reflects
hardware behavior and drivers use 'parent_bus_addr' in struct of_pci_range.
┌─────────┐ ┌────────────┐
┌─────┐ │ │ IA: 0x8ff8_0000 │ │
│ CPU ├───►│ ┌────►├─────────────────┐ │ PCI │
└─────┘ │ │ │ IA: 0x8ff0_0000 │ │ │
CPU Addr │ │ ┌─►├─────────────┐ │ │ Controller │
0x7ff8_0000─┼───┘ │ │ │ │ │ │
│ │ │ │ │ │ │ PCI Addr
0x7ff0_0000─┼──────┘ │ │ └──► IOSpace ─┼────────────►
│ │ │ │ │ 0
0x7000_0000─┼────────►├─────────┐ │ │ │
└─────────┘ │ └──────► CfgSpace ─┼────────────►
BUS Fabric │ │ │ 0
│ │ │
└──────────► MemSpace ─┼────────────►
IA: 0x8000_0000 │ │ 0x8000_0000
└────────────┘
bus@5f000000 {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x80000000 0x0 0x70000000 0x10000000>;
pcie@5f010000 {
compatible = "fsl,imx8q-pcie";
reg = <0x5f010000 0x10000>, <0x8ff00000 0x80000>;
reg-names = "dbi", "config";
#address-cells = <3>;
#size-cells = <2>;
device_type = "pci";
bus-range = <0x00 0xff>;
ranges = <0x81000000 0 0x00000000 0x8ff80000 0 0x00010000>,
<0x82000000 0 0x80000000 0x80000000 0 0x0ff00000>;
...
};
};
In the diagram above, the 'parent_bus_addr' field in struct of_pci_range
can indicate internal address (IA) address information.
Link: https://lore.kernel.org/r/20241119-pci_fixup_addr-v8-1-c4bfa5193288@nxp.com
Signed-off-by: Frank Li <Frank.Li@nxp.com>
[kwilczynski: commit log]
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
|
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Linus Torvalds
|
595523945b |
Devicetree fixes for 6.13, part 2:
Another fix and testcase to avoid the newly added WARN in the case of non-translatable addresses. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEktVUI4SxYhzZyEuo+vtdtY28YcMFAmeK0gAACgkQ+vtdtY28 YcNanRAAjtXeeRK8NZJ9JfjTDaNMxQJ89WVSKmbJBNH8M/hWFK9eq2fJvNwnPJJT 4xHfWvNr7znyC2kLm6k/LKGmyV/mQqiJ8vCaBKQ1KssjQ1hXR7JiXbniw78Rc0LD zfY9nDxMRm8jJhz5T0TNfhWn1bBAUA9dibew8etdo2KqCXGrFnGIZoeFU/ro8Tzy /bW90QhlUxze9V4bH/4UBvTmfK8WmSTobG9r7Z2/YXcbTxB1uDGKZhV4jhJ4Issa qrue201VlReHdRmiYWeDz57m/aXBudOvLaDJVymzoYJU5FypNH/757cvmysiQxzq tRRLgZLhAye5qB3HCX5xa6v3CvAvuf01EzTMMLKuKA4IkkaoO6CjjG7D/ip4lvdc Ekt4OFGYdxGQaJNeXmaLioJzhrsS0NQe4ZFUQF1YnMdOfI3vneVsRcG6CHgKyfft pnoBiakIiapNj4S/UTn+A2bI+/rG0P9rbMwhpb3ojJBlp5IpC/8vqKzeA8Hzy19I 3Yi3lfX4sscSvQJk6izkTxwDMfx/FsrQfkf6PS8eYfhAlyMcc1JKuxN15sIoEth7 TapRH0hR5aCe64jYWpIEIwaVb+d2izdEPf+9Dd7v/LBRe44mvHnLAMs2936UxvUg U/dKP9iR/pWaibPpIGuK6RCRY4uO6qJfzwvSRPrJNohZUk8RNhM= =Uw0f -----END PGP SIGNATURE----- Merge tag 'devicetree-fixes-for-6.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull devicetree fixes from Rob Herring: "Another fix and testcase to avoid the newly added WARN in the case of non-translatable addresses" * tag 'devicetree-fixes-for-6.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: of/address: Fix WARN when attempting translating non-translatable addresses of/unittest: Add test that of_address_to_resource() fails on non-translatable address |
|
Zijun Hu
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8537a7011b |
of: Correct element count for two arrays in API of_parse_phandle_with_args_map()
of_parse_phandle_with_args_map() defines array @dummy_mask and @dummy_pass these two arrays only need @MAX_PHANDLE_ARGS elements separately, but they actually have (@MAX_PHANDLE_ARGS + 1) elements, One extra element doesn't hurt anything except for some stack usage. Fix by using (@MAX_PHANDLE_ARGS - 1) as max element index in initializer. Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com> Link: https://lore.kernel.org/r/20250114-of_core_fix-v5-3-b8bafd00a86f@quicinc.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
|
|
Zijun Hu
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81dfedd523 |
of: reserved-memory: Warn for missing static reserved memory regions
For child node of /reserved-memory, its property 'reg' may contain
multiple regions, but fdt_scan_reserved_mem_reg_nodes() only takes
into account the first region, and miss remaining regions.
But there are no simple approach to fix it, so give user warning
message when miss remaining regions.
Fixes:
|
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Zijun Hu
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72d1c18262 |
of: Do not expose of_alias_scan() and correct its comments
of_alias_scan() has no external callers and returns void. Do not expose it and delete return value descriptions in its comments. Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com> Link: https://lore.kernel.org/r/20250114-of_core_fix-v5-1-b8bafd00a86f@quicinc.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
|
|
Rob Herring (Arm)
|
c141ecc3ce |
of: Warn when of_property_read_bool() is used on non-boolean properties
The use of of_property_read_bool() for non-boolean properties is deprecated. The primary use of it was to test property presence, but that has been replaced in favor of of_property_present(). With those uses now fixed, add a warning to discourage new ones. Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Link: https://lore.kernel.org/r/20250109-dt-type-warnings-v1-2-0150e32e716c@kernel.org Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
|
|
Rob Herring (Arm)
|
bb3914101f |
device property: Split property reading bool and presence test ops
The fwnode/device property API currently implement (fwnode|device)_property_read_bool() with (fwnode|device)_property_present(). That does not allow having different behavior depending on the backend. Specifically, the usage of (fwnode|device)_property_read_bool() on non-boolean properties is deprecated on DT. In order to add a warning on this deprecated use, these 2 APIs need separate ops for the backend. Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://lore.kernel.org/r/20250109-dt-type-warnings-v1-1-0150e32e716c@kernel.org Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
|
|
Zijun Hu
|
de7323f6fc |
of/fdt: Check fdt_get_mem_rsv() error in early_init_fdt_scan_reserved_mem()
early_init_fdt_scan_reserved_mem() invoks fdt_get_mem_rsv(), and it will use uninitialized variables @base and @size once the callee suffers error. Fix by checking fdt_get_mem_rsv() error as other callers do. Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com> Link: https://lore.kernel.org/r/20250109-of_core_fix-v4-13-db8a72415b8c@quicinc.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
|
|
Zijun Hu
|
ab7eeb7b43 |
of: reserved-memory: Move an assignment to effective place in __reserved_mem_alloc_size()
The assignment '@base = 0' in __reserved_mem_alloc_size() is meaningless since @base was already initialized to 0. Move the assignment to effective and proper place. Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com> Link: https://lore.kernel.org/r/20250109-of_core_fix-v4-12-db8a72415b8c@quicinc.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
|
|
Zijun Hu
|
29091a5256 |
of: reserved-memory: Do not make kmemleak ignore freed address
early_init_dt_alloc_reserved_memory_arch() will free address @base when
suffers memblock_mark_nomap() error, but it still makes kmemleak ignore
the freed address @base via kmemleak_ignore_phys().
That is unnecessary, besides, also causes unnecessary warning messages:
kmemleak_ignore_phys()
-> make_black_object()
-> paint_ptr()
-> kmemleak_warn() // warning message here.
Fix by avoiding kmemleak_ignore_phys() when suffer the error.
Fixes:
|
|
|
Zijun Hu
|
267b21d0be |
of: reserved-memory: Fix using wrong number of cells to get property 'alignment'
According to DT spec, size of property 'alignment' is based on parent
node’s #size-cells property.
But __reserved_mem_alloc_size() wrongly uses @dt_root_addr_cells to get
the property obviously.
Fix by using @dt_root_size_cells instead of @dt_root_addr_cells.
Fixes:
|
|
|
Zijun Hu
|
1734514560 |
of: Remove a duplicated code block
address.c has a same code block with fdt_address.c. Remove a copy by moving the duplicated code block into of_private.h. Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com> Link: https://lore.kernel.org/r/20250109-of_core_fix-v4-8-db8a72415b8c@quicinc.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
|
|
Zijun Hu
|
f73780e772 |
of: property: Avoiding using uninitialized variable @imaplen in parse_interrupt_map()
parse_interrupt_map() will use uninitialized variable @imaplen if fails
to get property 'interrupt-map'.
Fix by using the variable after successfully getting the property.
Fixes:
|
|
Greg Kroah-Hartman
|
dd19f4116e |
Merge 6.13-rc7 into driver-core-next
We need the debugfs / driver-core fixes in here as well for testing and to build on top of. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
|
|
Rob Herring (Arm)
|
6e5773d52f |
of/address: Fix WARN when attempting translating non-translatable addresses
The recently added WARN() for deprecated #address-cells and #size-cells
triggered a WARN when of_platform_populate() (which calls
of_address_to_resource()) is used on nodes with non-translatable
addresses. This case is expected to return an error.
Rework the bus matching to allow no match and make the default require
an #address-cells property. That should be safe to do as any platform
missing #address-cells would have a warning already.
Fixes:
|
|
|
Rob Herring (Arm)
|
44748065ed |
of/unittest: Add test that of_address_to_resource() fails on non-translatable address
of_address_to_resource() on a non-translatable address should return an error. Additionally, this case also triggers a spurious WARN for missing #address-cells/#size-cells. Link: https://lore.kernel.org/r/20250110215030.3637845-1-robh@kernel.org Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
|
|
Zijun Hu
|
e4c00c9b1f |
of: Correct child specifier used as input of the 2nd nexus node
API of_parse_phandle_with_args_map() will use wrong input for nexus node
Nexus_2 as shown below:
Node_1 Nexus_1 Nexus_2
&Nexus_1,arg_1 -> arg_1,&Nexus_2,arg_2' -> &Nexus_2,arg_2 -> arg_2,...
map-pass-thru=<...>
Nexus_1's output arg_2 should be used as input of Nexus_2, but the API
wrongly uses arg_2' instead which != arg_2 due to Nexus_1's map-pass-thru.
Fix by always making @match_array point to @initial_match_array into
which to store nexus output.
Fixes:
|
|
Thomas Weißschuh
|
a6a035a83c |
of: Constify 'struct bin_attribute'
The sysfs core now allows instances of 'struct bin_attribute' to be moved into read-only memory. Make use of that to protect them against accidental or malicious modifications. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/r/20241222-sysfs-const-bin_attr-of-v1-1-99cc2e8c2a55@weissschuh.net Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
|
|
Linus Torvalds
|
bcde95ce32 |
Devicetree fixes for 6.13, part 1:
- Disable #address-cells/#size-cells warning on coreboot (Chromebooks) platforms - Add missing root #address-cells/#size-cells in default empty DT - Fix uninitialized variable in of_irq_parse_one() - Fix interrupt-map cell length check in of_irq_parse_imap_parent() - Fix refcount handling in __of_get_dma_parent() - Fix error path in of_parse_phandle_with_args_map() - Fix dma-ranges handling with flags cells - Drop explicit fw_devlink handling of 'interrupt-parent' - Fix "compression" typo in fixed-partitions binding - Unify "fsl,liodn" property type definitions -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEktVUI4SxYhzZyEuo+vtdtY28YcMFAmdoKtIACgkQ+vtdtY28 YcPM9w//foQifBxhfhjGFOZT/nZhlQu2EJT4eJ02hmFSDyvSBHTTdWELcjOKaGO7 QDex/Pw8gv1x0XMywaAOcCcZlQKUd0R9KjC+bWi+lC+f1MGyj5Pd1O2/jtZLJbuB BwGm/h4rxzM0nNDhD+mQwC/pZId0+ATA9kV4iR4RexWTxWdeYV8KDc7zA1pxi/aI PpKEQ6aapXCNjwYGANzs3ylA5AUHijQHOs9L64ACPAIJTN5ZOZvB1mZ33vp4NHl6 yNdNnZ8xZl8vecTM3rYTX9/yDRU18ME4gE72Hz5PfJ7aO7Xy8ebc4JCFTP8Iefwl ivVYsFFKIvqKArE0NRDxqYYmOpBob8id7nDuAZ2wmx0LLNgM/bkrk1ysuUwoMeQd aP/sGZ3+roKLDpBBTnOmTw89YWYkaLFXVwU4TbN7UIzqSYX5onGzSagN3fEnmHQu Q6hehVa9M758hwxiVK4S4z79RKTVwq8u1BLMe/s765xDKpvJGVwH4QlV+MfKLcn9 jbG2hT/mYwAQebmNqVWI7dAb8dt7zXijebuJCGPMW4RquBNGi+59MRAd4HrkJ2i4 DABbp3A5OqlyN05ilpB89w+GsPCgDL179mTy0MxRGY4O6GIqKdcBGjzqPHPW6UQf o9zdnw5ZnP9YicApGLwGgMpdoUS7voWyyrHGw+4i9oiOKLldVww= =CFJI -----END PGP SIGNATURE----- Merge tag 'devicetree-fixes-for-6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull devicetree fixes from Rob Herring: - Disable #address-cells/#size-cells warning on coreboot (Chromebooks) platforms - Add missing root #address-cells/#size-cells in default empty DT - Fix uninitialized variable in of_irq_parse_one() - Fix interrupt-map cell length check in of_irq_parse_imap_parent() - Fix refcount handling in __of_get_dma_parent() - Fix error path in of_parse_phandle_with_args_map() - Fix dma-ranges handling with flags cells - Drop explicit fw_devlink handling of 'interrupt-parent' - Fix "compression" typo in fixed-partitions binding - Unify "fsl,liodn" property type definitions * tag 'devicetree-fixes-for-6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: of: Add coreboot firmware to excluded default cells list of/irq: Fix using uninitialized variable @addr_len in API of_irq_parse_one() of/irq: Fix interrupt-map cell length check in of_irq_parse_imap_parent() of: Fix refcount leakage for OF node returned by __of_get_dma_parent() of: Fix error path in of_parse_phandle_with_args_map() dt-bindings: mtd: fixed-partitions: Fix "compression" typo of: Add #address-cells/#size-cells in the device-tree root empty node dt-bindings: Unify "fsl,liodn" type definitions of: address: Preserve the flags portion on 1:1 dma-ranges mapping of/unittest: Add empty dma-ranges address translation tests of: property: fw_devlink: Do not use interrupt-parent directly |
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Rob Herring (Arm)
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8600058ba2 |
of: Add coreboot firmware to excluded default cells list
Google Juniper and other Chromebook platforms have a very old bootloader which populates /firmware node without proper address/size-cells leading to warnings: Missing '#address-cells' in /firmware WARNING: CPU: 0 PID: 1 at drivers/of/base.c:106 of_bus_n_addr_cells+0x90/0xf0 Modules linked in: CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.0 #1 933ab9971ff4d5dc58cb378a96f64c7f72e3454d Hardware name: Google juniper sku16 board (DT) ... Missing '#size-cells' in /firmware WARNING: CPU: 0 PID: 1 at drivers/of/base.c:133 of_bus_n_size_cells+0x90/0xf0 Modules linked in: CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Tainted: G W 6.12.0 #1 933ab9971ff4d5dc58cb378a96f64c7f72e3454d Tainted: [W]=WARN Hardware name: Google juniper sku16 board (DT) These platform won't receive updated bootloader/firmware, so add an exclusion for platforms with a "coreboot" compatible node. While this is wider than necessary, that's the easiest fix and it doesn't doesn't matter if we miss checking other platforms using coreboot. We may revisit this later and address with a fixup to the DT itself. Reported-by: Sasha Levin <sashal@kernel.org> Closes: https://lore.kernel.org/all/Z0NUdoG17EwuCigT@sashalap/ Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Chen-Yu Tsai <wenst@chromium.org> Cc: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
|
Danilo Krummrich
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b2e8a83242 |
samples: rust: add Rust platform sample driver
Add a sample Rust platform driver illustrating the usage of the platform bus abstractions. This driver probes through either a match of device / driver name or a match within the OF ID table. Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Signed-off-by: Danilo Krummrich <dakr@kernel.org> Tested-by: Dirk Behme <dirk.behme@de.bosch.com> Tested-by: Fabien Parent <fabien.parent@linaro.org> Link: https://lore.kernel.org/r/20241219170425.12036-16-dakr@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
|
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Zijun Hu
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b9e58c934c |
of: Fix of_find_node_opts_by_path() handling of alias+path+options
of_find_node_opts_by_path() fails to find OF device node when its
@path parameter have pattern below:
"alias-name/node-name-1/.../node-name-N:options".
The reason is that alias name length calculated by the API is wrong, as
explained by example below:
"testcase-alias/phandle-tests/consumer-a:testaliasoption".
^ ^ ^
0 14 39
The right length of alias 'testcase-alias' is 14, but the result worked
out by the API is 39 which is obvious wrong.
Fix by using index of either '/' or ':' as the length who comes earlier.
Fixes:
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|
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Zijun Hu
|
c1b4b91a5e |
of: unittest: Add a test case for of_find_node_opts_by_path() with alias+path+options
To test of_find_node_opts_by_path() take @path argument with pattern: "alias-name/node-name-1/.../node-name-N:options", for example: "testcase-alias/phandle-tests/consumer-a:testaliasoption" Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com> Link: https://lore.kernel.org/r/20241216-of_core_fix-v2-2-e69b8f60da63@quicinc.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
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Zijun Hu
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0f7ca6f693 |
of/irq: Fix using uninitialized variable @addr_len in API of_irq_parse_one()
of_irq_parse_one() may use uninitialized variable @addr_len as shown below:
// @addr_len is uninitialized
int addr_len;
// This operation does not touch @addr_len if it fails.
addr = of_get_property(device, "reg", &addr_len);
// Use uninitialized @addr_len if the operation fails.
if (addr_len > sizeof(addr_buf))
addr_len = sizeof(addr_buf);
// Check the operation result here.
if (addr)
memcpy(addr_buf, addr, addr_len);
Fix by initializing @addr_len before the operation.
Fixes:
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|
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Zijun Hu
|
fec3edc47d |
of/irq: Fix interrupt-map cell length check in of_irq_parse_imap_parent()
On a malformed interrupt-map property which is shorter than expected by
1 cell, we may read bogus data past the end of the property instead of
returning an error in of_irq_parse_imap_parent().
Decrement the remaining length when skipping over the interrupt parent
phandle cell.
Fixes:
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|
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Zijun Hu
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5d009e0240 |
of: Fix refcount leakage for OF node returned by __of_get_dma_parent()
__of_get_dma_parent() returns OF device node @args.np, but the node's
refcount is increased twice, by both of_parse_phandle_with_args() and
of_node_get(), so causes refcount leakage for the node.
Fix by directly returning the node got by of_parse_phandle_with_args().
Fixes:
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|
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Zijun Hu
|
3a973ce1b9 |
of/irq: Correct element count for array @dummy_imask in API of_irq_parse_raw()
Array @dummy_imask only needs MAX_PHANDLE_ARGS elements, but it actually has (MAX_PHANDLE_ARGS + 1) elements. One extra element doesn't hurt anything except for some stack usage. Fix by using (MAX_PHANDLE_ARGS - 1) as max element index in initializer. Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com> Link: https://lore.kernel.org/r/20241209-of_irq_fix-v1-2-782f1419c8a1@quicinc.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
|
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Zijun Hu
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4bc244f681 |
of: Simplify API of_find_node_with_property() implementation
Simplify of_find_node_with_property() implementation by __of_find_property(). Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com> Link: https://lore.kernel.org/r/20241206-of_core_fix-v1-10-dc28ed56bec3@quicinc.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
|
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Zijun Hu
|
4ff899ee4e |
of/fdt: Dump __be32 array in CPU type order in of_dump_addr()
of_dump_addr() dumps __be32 array without conversion to CPU byte order in advance, that will reduce log readability for little endian CPUs. Fix by be32_to_cpu() conversion before dump. Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com> Link: https://lore.kernel.org/r/20241206-of_core_fix-v1-6-dc28ed56bec3@quicinc.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
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Stephen Boyd
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3c48780d48 |
of: Hide of_default_bus_match_table[]
This isn't used outside this file. Hide the array in the C file. Signed-off-by: Stephen Boyd <swboyd@chromium.org> Acked-by: Saravana Kannan <saravanak@google.com> Link: https://lore.kernel.org/r/20241204194806.2665589-1-swboyd@chromium.org Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
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Herve Codina
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d7dfa7fde6 |
of: Fix error path in of_parse_phandle_with_args_map()
The current code uses some 'goto put;' to cancel the parsing operation
and can lead to a return code value of 0 even on error cases.
Indeed, some goto calls are done from a loop without setting the ret
value explicitly before the goto call and so the ret value can be set to
0 due to operation done in previous loop iteration. For instance match
can be set to 0 in the previous loop iteration (leading to a new
iteration) but ret can also be set to 0 it the of_property_read_u32()
call succeed. In that case if no match are found or if an error is
detected the new iteration, the return value can be wrongly 0.
Avoid those cases setting the ret value explicitly before the goto
calls.
Fixes:
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|
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Thomas Weißschuh
|
16ef9c9de0 |
of/fdt: Implement use BIN_ATTR_SIMPLE macro for fdt sysfs attribute
The usage of the macro allows to remove the custom handler function, saving some memory. Additionally the code is easier to read. While at it also mark the attribute as __ro_after_init, as the only modification happens in the __init phase. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/r/20241122-sysfs-const-bin_attr-of-v1-1-7052f9dcd4be@weissschuh.net Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
|
|
Herve Codina
|
60bc447c85 |
of: Add #address-cells/#size-cells in the device-tree root empty node
On systems where ACPI is enabled or when a device-tree is not passed to the kernel by the bootloader, a device-tree root empty node is created. This device-tree root empty node does not have the #address-cells and the #size-cells properties This leads to the use of the default address cells and size cells values which are defined in the code to 1 for the address cells value and 1 for the size cells value. According to the devicetree specification and the OpenFirmware standard (IEEE 1275-1994) the default value for #address-cells should be 2. Also, according to the devicetree specification, the #address-cells and the #size-cells are required properties in the root node. The device tree compiler already uses 2 as default value for address cells and 1 for size cells. The powerpc PROM code also uses 2 as default value for address cells and 1 for size cells. Modern implementation should have the #address-cells and the #size-cells properties set and should not rely on default values. On x86, this root empty node is used and the code default values are used. In preparation of the support for device-tree overlay on PCI devices feature on x86 (i.e. the creation of the PCI root bus device-tree node), the default value for #address-cells needs to be updated. Indeed, on x86_64, addresses are on 64bits and the upper part of an address is needed for correct address translations. On x86_32 having the default value updated does not lead to issues while the upper part of a 64-bit value is zero. Changing the default value for all architectures may break device-tree compatibility. Indeed, existing dts file without the #address-cells property set in the root node will not be compatible with this modification. Instead of updating default values, add both required #address-cells and #size-cells properties in the device-tree empty node. Use 2 for both properties value in order to fully support 64-bit addresses and sizes on systems using this empty root node. Signed-off-by: Herve Codina <herve.codina@bootlin.com> Link: https://lore.kernel.org/r/20241202131522.142268-6-herve.codina@bootlin.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
|
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Linus Torvalds
|
e70140ba0d |
Get rid of 'remove_new' relic from platform driver struct
The continual trickle of small conversion patches is grating on me, and is really not helping. Just get rid of the 'remove_new' member function, which is just an alias for the plain 'remove', and had a comment to that effect: /* * .remove_new() is a relic from a prototype conversion of .remove(). * New drivers are supposed to implement .remove(). Once all drivers are * converted to not use .remove_new any more, it will be dropped. */ This was just a tree-wide 'sed' script that replaced '.remove_new' with '.remove', with some care taken to turn a subsequent tab into two tabs to make things line up. I did do some minimal manual whitespace adjustment for places that used spaces to line things up. Then I just removed the old (sic) .remove_new member function, and this is the end result. No more unnecessary conversion noise. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds
|
a14bf463e7 |
i2c-for-6.13-rc1-part3
core: add of based component probing Some devices are designed and manufactured with some components having multiple drop-in replacement options. These components are often connected to the mainboard via ribbon cables, having the same signals and pin assignments across all options. These may include the display panel and touchscreen on laptops and tablets, and the trackpad on laptops. Sometimes which component option is used in a particular device can be detected by some firmware provided identifier, other times that information is not available, and the kernel has to try to probe each device. Instead of a delicate dance between drivers and device tree quirks, this change introduces a simple I2C component probe function. For a given class of devices on the same I2C bus, it will go through all of them, doing a simple I2C read transfer and see which one of them responds. It will then enable the device that responds. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAmdMOCwACgkQFA3kzBSg KbaLWQ//e+29c9Trh+Typ6YCknuCFmM12xNUEPgce93EldERZjfCsdlHEchJnjEe RX5Mw+UxT7NqFUD6G2YQQw35LMj/PDws4Q/q3OwAvurj2PqoKEGIbdTxUEbGrLtT aYRUjGoqjPk3gAkqfKEQp8X8bvqKJfQ/xeXcZyy7Ij8xPU1LC/W6So4vpZA7oZkZ UfwrUXu2NM/DKfLATeSH3vnlBrrpco9BdjImDanP8BpuYHQ0aNt7IToDytd3/rLZ WKQPbHqVzzBUHm8Tf+DTyeVtII/ID078z+RW7htPrzPtzhVu2DN56w3z7/+EsVIy XKb1PiJo5HlFev4gxhIcUgf8L5JYE8MyU8eeRWAcDObiBYVcSP34P7Xoykczjuq9 22IFNSdaqMVdigo9v4p7U99fVjoi3oUqIVsSb2HkmND8bPw3+jtyq1GxTFvTeOw8 EVJGuGjYrPiko26zNgK/WZaumpB+fsH7uRioSb1ejlSQk0BcNv4YqjYaMx9aT7Xj +zF7luuxpkWTkPCjk57GX55K/BFzkA9jhJdKqjImBS+Q9Rn3k5bHyRdNPUDIeWs0 Yl5dhg6QbLHyuPC2R/hJiV6X4uFloH9+Oh99T3lLzcVNc2mllPQDN9F4I8q5nWB8 Eq5U95fnegfdVkiWnbNCnTCux/mypm35Gx46BffTiAJL2U9pSIE= =MAxU -----END PGP SIGNATURE----- Merge tag 'i2c-for-6.13-rc1-part3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c component probing support from Wolfram Sang: "Add OF component probing. Some devices are designed and manufactured with some components having multiple drop-in replacement options. These components are often connected to the mainboard via ribbon cables, having the same signals and pin assignments across all options. These may include the display panel and touchscreen on laptops and tablets, and the trackpad on laptops. Sometimes which component option is used in a particular device can be detected by some firmware provided identifier, other times that information is not available, and the kernel has to try to probe each device. Instead of a delicate dance between drivers and device tree quirks, this change introduces a simple I2C component probe function. For a given class of devices on the same I2C bus, it will go through all of them, doing a simple I2C read transfer and see which one of them responds. It will then enable the device that responds" * tag 'i2c-for-6.13-rc1-part3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: MAINTAINERS: fix typo in I2C OF COMPONENT PROBER of: base: Document prefix argument for of_get_next_child_with_prefix() i2c: Fix whitespace style issue arm64: dts: mediatek: mt8173-elm-hana: Mark touchscreens and trackpads as fail platform/chrome: Introduce device tree hardware prober i2c: of-prober: Add GPIO support to simple helpers i2c: of-prober: Add simple helpers for regulator support i2c: Introduce OF component probe function of: base: Add for_each_child_of_node_with_prefix() of: dynamic: Add of_changeset_update_prop_string |
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|
Linus Torvalds
|
6a34dfa15d |
Kbuild updates for v6.13
- Add generic support for built-in boot DTB files
- Enable TAB cycling for dialog buttons in nconfig
- Fix issues in streamline_config.pl
- Refactor Kconfig
- Add support for Clang's AutoFDO (Automatic Feedback-Directed
Optimization)
- Add support for Clang's Propeller, a profile-guided optimization.
- Change the working directory to the external module directory for M=
builds
- Support building external modules in a separate output directory
- Enable objtool for *.mod.o and additional kernel objects
- Use lz4 instead of deprecated lz4c
- Work around a performance issue with "git describe"
- Refactor modpost
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Merge tag 'kbuild-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- Add generic support for built-in boot DTB files
- Enable TAB cycling for dialog buttons in nconfig
- Fix issues in streamline_config.pl
- Refactor Kconfig
- Add support for Clang's AutoFDO (Automatic Feedback-Directed
Optimization)
- Add support for Clang's Propeller, a profile-guided optimization.
- Change the working directory to the external module directory for M=
builds
- Support building external modules in a separate output directory
- Enable objtool for *.mod.o and additional kernel objects
- Use lz4 instead of deprecated lz4c
- Work around a performance issue with "git describe"
- Refactor modpost
* tag 'kbuild-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (85 commits)
kbuild: rename .tmp_vmlinux.kallsyms0.syms to .tmp_vmlinux0.syms
gitignore: Don't ignore 'tags' directory
kbuild: add dependency from vmlinux to resolve_btfids
modpost: replace tdb_hash() with hash_str()
kbuild: deb-pkg: add python3:native to build dependency
genksyms: reduce indentation in export_symbol()
modpost: improve error messages in device_id_check()
modpost: rename alias symbol for MODULE_DEVICE_TABLE()
modpost: rename variables in handle_moddevtable()
modpost: move strstarts() to modpost.h
modpost: convert do_usb_table() to a generic handler
modpost: convert do_of_table() to a generic handler
modpost: convert do_pnp_device_entry() to a generic handler
modpost: convert do_pnp_card_entries() to a generic handler
modpost: call module_alias_printf() from all do_*_entry() functions
modpost: pass (struct module *) to do_*_entry() functions
modpost: remove DEF_FIELD_ADDR_VAR() macro
modpost: deduplicate MODULE_ALIAS() for all drivers
modpost: introduce module_alias_printf() helper
modpost: remove unnecessary check in do_acpi_entry()
...
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Chen-Yu Tsai
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0d40daa1c1 |
of: base: Document prefix argument for of_get_next_child_with_prefix()
When of_get_next_child_with_prefix() was added, the prefix argument was
left undocumented. This caused a new warning to be generated during the
kerneldoc build process:
drivers/of/base.c:661: warning: Function parameter or struct member 'prefix'
not described in 'of_get_next_child_with_prefix'
Properly document the argument to fix this.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202411280010.KGSDBOUE-lkp@intel.com/
Fixes:
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Andrea della Porta
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7f05e20b98 |
of: address: Preserve the flags portion on 1:1 dma-ranges mapping
A missing or empty dma-ranges in a DT node implies a 1:1 mapping for dma
translations. In this specific case, the current behaviour is to zero out
the entire specifier so that the translation could be carried on as an
offset from zero. This includes address specifier that has flags (e.g.
PCI ranges).
Once the flags portion has been zeroed, the translation chain is broken
since the mapping functions will check the upcoming address specifier
against mismatching flags, always failing the 1:1 mapping and its entire
purpose of always succeeding.
Set to zero only the address portion while passing the flags through.
Fixes:
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Andrea della Porta
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1a75e81baf |
of/unittest: Add empty dma-ranges address translation tests
Intermediate DT PCI nodes dynamically generated by enabling CONFIG_PCI_DYNAMIC_OF_NODES have empty dma-ranges property. PCI address specifiers have 3 cells and when dma-ranges is missing or empty, of_translate_one() is currently dropping the flag portion of PCI addresses which are subnodes of the aforementioned ones, failing the translation. Add new tests covering this case. With this test, we get 1 new failure which is fixed in subsequent commit: FAIL of_unittest_pci_empty_dma_ranges():1245 for_each_of_pci_range wrong CPU addr (ffffffffffffffff) on node /testcase-data/address-tests2/pcie@d1070000/pci@0,0/dev@0,0/local-bus@0 Signed-off-by: Andrea della Porta <andrea.porta@suse.com> Link: https://lore.kernel.org/r/08f8fee4fdc0379240fda2f4a0e6f11ebf9647a8.1732441813.git.andrea.porta@suse.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
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Chen-Yu Tsai
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1fcc67e3a3 |
of: base: Add for_each_child_of_node_with_prefix()
There are cases where drivers would go through child device nodes and operate on only the ones whose node name starts with a given prefix. Provide a helper for these users. This will mainly be used in a subsequent patch that implements a hardware component prober for I2C busses. Signed-off-by: Chen-Yu Tsai <wenst@chromium.org> Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> |
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Chen-Yu Tsai
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81de291d86 |
of: dynamic: Add of_changeset_update_prop_string
Add a helper function to add string property updates to an OF changeset. This is similar to of_changeset_add_prop_string(), but instead of adding the property (and failing if it exists), it will update the property. This shall be used later in the DT hardware prober. Signed-off-by: Chen-Yu Tsai <wenst@chromium.org> Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> |