This is a note to let you know that I've just added the patch titled
usb: cdnsp: Fix segmentation fault in cdns_lost_power function
to the 5.16-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-cdnsp-fix-segmentation-fault-in-cdns_lost_power-function.patch
and it can be found in the queue-5.16 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 79aa3e19fe8f5be30e846df8a436bfe306e8b1a6 Mon Sep 17 00:00:00 2001
From: Pawel Laszczak <pawell@xxxxxxxxxxx>
Date: Tue, 11 Jan 2022 10:07:37 +0100
Subject: usb: cdnsp: Fix segmentation fault in cdns_lost_power function
From: Pawel Laszczak <pawell@xxxxxxxxxxx>
commit 79aa3e19fe8f5be30e846df8a436bfe306e8b1a6 upstream.
CDNSP driver read not initialized cdns->otg_v0_regs
which lead to segmentation fault. Patch fixes this issue.
Fixes: 2cf2581cd229 ("usb: cdns3: add power lost support for system resume")
cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Pawel Laszczak <pawell@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220111090737.10345-1-pawell@xxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/cdns3/drd.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/usb/cdns3/drd.c
+++ b/drivers/usb/cdns3/drd.c
@@ -483,11 +483,11 @@ int cdns_drd_exit(struct cdns *cdns)
/* Indicate the cdns3 core was power lost before */
bool cdns_power_is_lost(struct cdns *cdns)
{
- if (cdns->version == CDNS3_CONTROLLER_V1) {
- if (!(readl(&cdns->otg_v1_regs->simulate) & BIT(0)))
+ if (cdns->version == CDNS3_CONTROLLER_V0) {
+ if (!(readl(&cdns->otg_v0_regs->simulate) & BIT(0)))
return true;
} else {
- if (!(readl(&cdns->otg_v0_regs->simulate) & BIT(0)))
+ if (!(readl(&cdns->otg_v1_regs->simulate) & BIT(0)))
return true;
}
return false;
Patches currently in stable-queue which might be from pawell@xxxxxxxxxxx are
queue-5.16/usb-cdnsp-fix-segmentation-fault-in-cdns_lost_power-function.patch
