** Changed in: linux-oem-5.14 (Ubuntu Focal)
Status: Confirmed => Fix Committed
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-oem-5.14 in Ubuntu.
https://bugs.launchpad.net/bugs/1954369
Title:
Fix runtime power management on USB controller with
XHCI_RESET_ON_RESUME flag
Status in HWE Next:
New
Status in linux package in Ubuntu:
Confirmed
Status in linux-oem-5.14 package in Ubuntu:
Invalid
Status in linux source package in Focal:
Won't Fix
Status in linux-oem-5.14 source package in Focal:
Fix Committed
Bug description:
[Impact]
xHCI driver's runtime resume routine tries to reset USB controller with
XHCI_RESET_ON_RESUME flag. That causes USB devices connect to the xHCI
fail to work.
[Fix]
Disable runtime power management regardless of
CONFIG_USB_DEFAULT_PERSIST option.
[Test]
USB devices which connect to the xHCI controller can work normally.
[Where problems could occur]
USB_DEFAULT_PERSIST is a config for system-wide PM to speed up resume
time, so it shouldn't be applied to runtime PM at first place.
To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1954369/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
