[Bug 1930637] Re: ath11k WIFI not working in proposed kernel 5.11.0-19-generic

This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
focal' to 'verification-done-focal'. If the problem still exists, change
the tag 'verification-needed-focal' to 'verification-failed-focal'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: verification-needed-focal

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https://bugs.launchpad.net/bugs/1930637

Title:
ath11k WIFI not working in proposed kernel 5.11.0-19-generic

Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Hirsute:
Fix Released

Bug description:
[SRU Justification]

[Impact]

Bug 1928857 pulls stable patches from v5.11.20, which contains commit
dc764382762e {"bus: mhi: core: Process execution environment changes
serially") that cause a regression on ath11k cards and fails device
init:

mhi mhi0: MHI did not enter SBL

[Fix]

Upsteram commit 4884362f6977 ("bus: mhi: core: Download AMSS image
from appropriate function"), also landed to v5.12.6 but not v5.11
stable tree, has fixed this.

[Test Case]

Tested on Dell XPS 13 9310. No longer has this regression and both
WiFi/Bluetooth works fine as before.

[Where problems could occur]

The actual firmware downloading process is moved into a state machine
callback that has identical semantics with before. Additions or removals
to this in the future may change the timing of fw being dowloaded.

[Other Info]

While the commit causing this regress is backported to 5.11 onward and
fixed in v5.12 and 5.13, leaving Hirsute is the only victim.

========== original bug report ==========

See these references for more information:
 - https://bugzilla.kernel.org/show_bug.cgi?id=213055
 - https://bugs.archlinux.org/task/70849

Can you please prevent this already fixed bug from being introduced any further into Ubuntu.
Thanks.

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