This is a note to let you know that I've just added the patch titled
xhci: Don't show warning for reinit on known broken suspend
to the 4.19-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:
xhci-don-t-show-warning-for-reinit-on-known-broken-s.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit c2b577a7d3b7db3fb524e051d8ae3fab2ba697e5
Author: Mario Limonciello <mario.limonciello@xxxxxxx>
Date: Wed Sep 21 15:34:47 2022 +0300
xhci: Don't show warning for reinit on known broken suspend
[ Upstream commit 484d6f7aa3283d082c87654b7fe7a7f725423dfb ]
commit 8b328f8002bc ("xhci: re-initialize the HC during resume if HCE was
set") introduced a new warning message when the host controller error
was set and re-initializing.
This is expected behavior on some designs which already set
`xhci->broken_suspend` so the new warning is alarming to some users.
Modify the code to only show the warning if this was a surprising behavior
to the XHCI driver.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216470
Fixes: 8b328f8002bc ("xhci: re-initialize the HC during resume if HCE was set")
Reported-by: Artem S. Tashkinov <aros@xxxxxxx>
Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
Signed-off-by: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220921123450.671459-4-mathias.nyman@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 7fef6d9ed04f..3a1ed63d7334 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -1155,7 +1155,8 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
/* re-initialize the HC on Restore Error, or Host Controller Error */
if (temp & (STS_SRE | STS_HCE)) {
reinit_xhc = true;
- xhci_warn(xhci, "xHC error in resume, USBSTS 0x%x, Reinit\n", temp);
+ if (!xhci->broken_suspend)
+ xhci_warn(xhci, "xHC error in resume, USBSTS 0x%x, Reinit\n", temp);
}
if (reinit_xhc) {
