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linux/arch/s390/include/asm
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Farhan Ali b45873c3f0 s390/pci: Restore IRQ unconditionally for the zPCI device 
Commit c1e18c17bd ("s390/pci: add zpci_set_irq()/zpci_clear_irq()"),
introduced the zpci_set_irq() and zpci_clear_irq(), to be used while
resetting a zPCI device.

Commit da995d538d ("s390/pci: implement reset_slot for hotplug
slot"), mentions zpci_clear_irq() being called in the path for
zpci_hot_reset_device().  But that is not the case anymore and these
functions are not called outside of this file. Instead
zpci_hot_reset_device() relies on zpci_disable_device() also clearing
the IRQs, but misses to reset the zdev->irqs_registered flag.

However after a CLP disable/enable reset, the device's IRQ are
unregistered, but the flag zdev->irq_registered does not get cleared. It
creates an inconsistent state and so arch_restore_msi_irqs() doesn't
correctly restore the device's IRQ. This becomes a problem when a PCI
driver tries to restore the state of the device through
pci_restore_state(). Restore IRQ unconditionally for the device and remove
the irq_registered flag as its redundant.

Fixes: c1e18c17bd ("s390/pci: add zpci_set_irq()/zpci_clear_irq()")
Cc: stable@vger.kernnel.org
Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com>
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
Signed-off-by: Farhan Ali <alifm@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
 		2025-10-24 15:25:43 +02:00
..
trace
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vdso s390/time: Remove in-kernel time steering 2025-07-21 12:41:55 +02:00
Kbuild
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abs_lowcore.h s390/lowcore: Convert relocated lowcore alternative to machine feature 2025-03-04 17:18:05 +01:00
access-regs.h
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airq.h
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alternative.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
ap.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
appldata.h s390: Convert MACHINE_IS_[LPAR|VM|KVM], etc, machine_is_[lpar|vm|kvm]() 2025-03-04 17:18:07 +01:00
arch_hweight.h
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archrandom.h
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asce.h s390/mm: Reimplement lazy ASCE handling 2025-04-14 11:23:21 +02:00
asm-const.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
asm-extable.h s390/uaccess: Shorten raw_copy_from_user() / raw_copy_to_user() inline assemblies 2025-03-04 17:18:03 +01:00
asm-prototypes.h
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asm.h
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atomic.h
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atomic_ops.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
barrier.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
bitops.h more s390 updates for 6.18 merge window 2025-10-09 10:51:43 -07:00
boot_data.h
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bug.h
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cache.h
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ccwdev.h
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ccwgroup.h
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checksum.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
chpid.h
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chsc.h
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cio.h
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clocksource.h
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clp.h
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cmb.h
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cmpxchg.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
compat.h
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cpacf.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
cpcmd.h
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cpu.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
cpu_mf-insn.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
cpu_mf.h s390: Use inline qualifier for all EX_TABLE and ALTERNATIVE inline assemblies 2025-03-18 17:13:51 +01:00
cpufeature.h watchdog: diag288_wdt: Implement module autoload 2025-04-16 09:26:49 +02:00
cputime.h
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crw.h
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css_chars.h
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ctlreg.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
current.h s390/current: Implement current with inline assembly 2025-03-18 17:13:04 +01:00
dat-bits.h
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debug.h
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delay.h
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diag.h s390: Use inline qualifier for all EX_TABLE and ALTERNATIVE inline assemblies 2025-03-18 17:13:51 +01:00
diag288.h watchdog: diag288_wdt: Implement module autoload 2025-04-16 09:26:49 +02:00
dis.h
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dma-types.h
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dma.h
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dwarf.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
eadm.h
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ebcdic.h
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elf.h s390: Remove 2k vs 4k page table leftovers 2025-03-18 17:13:05 +01:00
entry-common.h KVM: s390: Rework guest entry logic 2025-07-21 13:01:03 +00:00
exec.h
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extable.h
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extmem.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
facility.h
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fault.h
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fcx.h
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fprobe.h
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fpu-insn-asm.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
fpu-insn.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
fpu-types.h
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fpu.h s390/vx: Convert cpu_has_vx() to cpu feature function 2025-03-04 17:18:07 +01:00
ftrace.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
ftrace.lds.h
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futex.h s390/mm: Reimplement lazy ASCE handling 2025-04-14 11:23:21 +02:00
gmap.h KVM: s390: Refactor and split some gmap helpers 2025-05-28 17:48:04 +02:00
gmap_helpers.h KVM: s390: Refactor and split some gmap helpers 2025-05-28 17:48:04 +02:00
hardirq.h
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hiperdispatch.h
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hugetlb.h mm: introduce memdesc_flags_t 2025-09-13 16:55:07 -07:00
hw_irq.h
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idals.h
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idle.h
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io.h - The 6 patch series "Enable strict percpu address space checks" from 2025-04-01 09:29:18 -07:00
ipl.h
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irq.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
irq_work.h
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irqflags.h
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isc.h
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itcw.h
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jump_label.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
kasan.h
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kdebug.h
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kexec.h
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kfence.h s390/kfence: Split kfence pool into 4k mappings in arch_kfence_init_pool() 2025-03-18 17:13:05 +01:00
kmsan.h
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kprobes.h
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kvm_host.h KVM: s390/vfio-ap: Use kvm_is_gpa_in_memslot() instead of open coded equivalent 2025-09-30 13:38:06 -04:00
kvm_host_types.h s390/kvm: Split kvm_host header file 2025-03-31 12:20:39 +02:00
kvm_para.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
linkage.h
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lowcore.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
maccess.h
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machine.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
march.h s390: Allow to compile with z17 optimizations 2025-04-09 12:12:41 +02:00
mem_encrypt.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
mmu.h s390: Remove 2k vs 4k page table leftovers 2025-03-18 17:13:05 +01:00
mmu_context.h s390/mm: Select ARCH_WANT_IRQS_OFF_ACTIVATE_MM 2025-04-14 11:23:21 +02:00
module.h
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msi.h
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nmi.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
nospec-branch.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
nospec-insn.h s390: Explicitly include <linux/export.h> 2025-06-17 18:18:02 +02:00
numa.h
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os_info.h
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page-states.h
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page.h Merge branch 'uaccess-key' into features 2025-06-29 13:21:16 +02:00
pai.h
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pci.h s390/pci: Restore IRQ unconditionally for the zPCI device 2025-10-24 15:25:43 +02:00
pci_clp.h s390/pci: check for relaxed translation capability 2025-02-21 12:01:57 +01:00
pci_debug.h
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pci_dma.h iommu/s390: allow larger region tables 2025-04-17 16:43:12 +02:00
pci_insn.h iommu/s390: Make attach succeed when the device was surprise removed 2025-09-05 15:11:09 +02:00
pci_io.h
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percpu.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
perf_event.h
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pfault.h
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pgalloc.h s390/mm: Add memory allocation profiling hooks 2025-09-25 14:28:58 +02:00
pgtable.h KVM: s390: A bugfix and a performance improvement 2025-09-30 13:09:20 -04:00
physmem_info.h
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pkey.h s390/pkey/crypto: Introduce xflags param for pkey in-kernel API 2025-04-30 11:34:03 +02:00
pnet.h
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preempt.h
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processor.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
ptrace.h s390 updates for 6.17 merge window 2025-07-29 20:17:08 -07:00
purgatory.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
qdio.h
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runtime-const.h
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runtime_instr.h
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rwonce.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
schid.h
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sclp.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
scsw.h
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seccomp.h
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sections.h
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set_memory.h
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setup.h s390/nmi: Print additional information 2025-06-26 15:30:51 +02:00
signal.h
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sigp.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
skey.h s390/skey: Provide infrastructure for executing with non-default access key 2025-06-29 13:12:02 +02:00
smp.h s390/smp: Implement raw_smp_processor_id() with inline assembly 2025-03-18 17:13:04 +01:00
softirq_stack.h
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sparsemem.h
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spinlock.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
spinlock_types.h
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stacktrace.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
stp.h
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string.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
syscall.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
syscall_wrapper.h
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sysinfo.h s390/sysinfo: Move stsi() to header file 2025-03-04 17:18:07 +01:00
text-patching.h
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thread_info.h s390/entry: Remove unused TIF flags 2025-09-17 08:14:04 +02:00
timex.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
tlb.h Generic: 2025-06-02 12:24:58 -07:00
tlbflush.h s390/tlb: Convert MACHINE_HAS_TLB_GUEST to machine_has_tlb_guest() 2025-03-04 17:18:06 +01:00
topology.h s390/smp: Add support for HOTPLUG_SMT 2025-03-31 12:20:39 +02:00
tpi.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
types.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
uaccess.h s390/uaccess: Make cmpxchg_user_key() library code 2025-06-29 13:12:01 +02:00
unistd.h
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unwind.h
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uprobes.h
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user.h
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uv.h Generic: 2025-06-02 12:24:58 -07:00
vdso-symbols.h
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vdso.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
vmalloc.h
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vmlinux.lds.h
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vtime.h
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vtimer.h
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word-at-a-time.h s390: Use inline qualifier for all EX_TABLE and ALTERNATIVE inline assemblies 2025-03-18 17:13:51 +01:00
xor.h
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