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linux/drivers/usb/dwc2
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Tomas Marek 2c6b6afa59 usb: dwc2: drd: fix clock gating on USB role switch 
The dwc2_handle_usb_suspend_intr() function disables gadget clocks in USB
peripheral mode when no other power-down mode is available (introduced by
commit 0112b7ce68 ("usb: dwc2: Update dwc2_handle_usb_suspend_intr function.")).
However, the dwc2_drd_role_sw_set() USB role update handler attempts to
read DWC2 registers if the USB role has changed while the USB is in suspend
mode (when the clocks are gated). This causes the system to hang.

Release the gadget clocks before handling the USB role update.

Fixes: 0112b7ce68 ("usb: dwc2: Update dwc2_handle_usb_suspend_intr function.")
Cc: stable@vger.kernel.org
Signed-off-by: Tomas Marek <tomas.marek@elrest.cz>
Link: https://lore.kernel.org/r/20240906055025.25057-1-tomas.marek@elrest.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2024-09-11 15:35:33 +02:00
..
Kconfig
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Makefile
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core.c usb: dwc2: New bitfield definition and programming in GRSTCTL 2024-03-26 10:44:53 +01:00
core.h Merge 6.9-rc2 into usb-next 2024-04-01 17:02:18 +02:00
core_intr.c Merge 6.9-rc2 into usb-next 2024-04-01 17:02:18 +02:00
debug.h
…
debugfs.c usb: dwc2: debugfs: Print parameter no_clock_gating 2024-07-31 10:47:10 +02:00
drd.c usb: dwc2: drd: fix clock gating on USB role switch 2024-09-11 15:35:33 +02:00
gadget.c usb: dwc2: gadget: Don't write invalid mapped sg entries into dma_desc with iommu enabled 2024-06-04 15:41:26 +02:00
hcd.c Merge 6.9-rc2 into usb-next 2024-04-01 17:02:18 +02:00
hcd.h usb: dwc2: Remove redundant license text 2022-09-22 15:52:29 +02:00
hcd_ddma.c usb: dwc2: host: Fix dereference issue in DDMA completion flow. 2024-04-09 17:29:38 +02:00
hcd_intr.c USB: dwc2: write HCINT with INTMASK applied 2023-11-21 15:30:27 +01:00
hcd_queue.c usb: dwc2: Remove cat_printf() 2024-03-26 10:43:45 +01:00
hw.h Merge 6.9-rc2 into usb-next 2024-04-01 17:02:18 +02:00
params.c usb: dwc2: Skip clock gating on Broadcom SoCs 2024-07-31 10:47:23 +02:00
pci.c usb: dwc2: add pci_device_id driver_data parse support 2023-08-22 14:49:12 +02:00
platform.c usb: dwc2: Adjust the timing of USB Driver Interrupt Registration in the Crashkernel Scenario 2024-09-03 09:53:08 +02:00