** Changed in: hwe-next
Status: New => Fix Released
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-oem in Ubuntu.
https://bugs.launchpad.net/bugs/1842388
Title:
Timeout waiting for hardware access (CSR_GP_CNTRL 0xffffffff) with
backport-iwlwifi-dkms 7744 against 4.15.0-1051-oem
Status in HWE Next:
Fix Released
Status in linux-oem package in Ubuntu:
Fix Released
Status in linux-oem source package in Bionic:
Fix Released
Bug description:
[Impact]
There is a new feature added from stable kernel
3fa98d338296 ("PCI / PM: Allow runtime PM without callback functions")
and this feature lead to the backport-iwlwifi dkms driver fails to resume
from runtime suspended.
[Fix]
iwlwifi driver fails if pci_finish_runtime_suspend() is called, so check if
runtime_suspend() function is provided before calling this function.
[Test]
Verified on Dell Precision 5540, wifi keeps working even after S3 test.
[Regression]
Low. pci_finish_runtime_suspend() puts the PCI device into a low power state,
it doesn't hurt if we don't call it, and it passes the 30 times S3 test, so it
should be fine to not to call it if runtime_suspend function is not provided.
To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1842388/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : [email protected]
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
