Re: [regressions] ath11k: v5.12.3 mhi regression

Greg KH [off-list ref] writes:

On Thu, May 20, 2021 at 11:04:05AM -0700, Bhaumik Bhatt wrote:

quoted

On 2021-05-20 10:58 AM, Greg KH wrote:

quoted

On Thu, May 20, 2021 at 10:38:12AM -0700, Bhaumik Bhatt wrote:

quoted

On 2021-05-20 05:36 AM, Kalle Valo wrote:

quoted

Manivannan Sadhasivam [off-list ref] writes:

quoted

On Thu, May 20, 2021 at 12:02:40PM +0200, Greg KH wrote:

quoted

On Thu, May 20, 2021 at 12:47:53PM +0300, Kalle Valo wrote:

quoted

Hi,

I got several reports that this mhi commit broke ath11k in v5.12.3:

commit 29b9829718c5e9bd68fc1c652f5e0ba9b9a64fed
Author: Bhaumik Bhatt [off-list ref]
Date:   Wed Feb 24 15:23:04 2021 -0800

    bus: mhi: core: Process execution environment changes serially

    [ Upstream commit ef2126c4e2ea2b92f543fae00a2a0332e4573c48 ]

Here are the reports:

https://bugzilla.kernel.org/show_bug.cgi?id=213055

https://bugzilla.kernel.org/show_bug.cgi?id=212187

https://bugs.archlinux.org/task/70849?project=1&string=linux

Interestingly v5.13-rc1 seems to work fine, at least for me, though I
have not tested v5.12.3 myself. Can someone revert this commit in the
stable release so that people get their wifi working again, please?

How does the mhi bus code relate to a ath11k driver?  What bus
is that
on?

MHI is the transport used by the ath11k driver to work with the WLAN
devices
over PCIe.

Regarding the bug, I'd suggest to wait for Bhaumik (the author of
29b9829718c5)
to comment on the possible commit which needs backporting from
mainline.

Ok, but if a quick fix is not available I think we should just revert
this in the stable releases. I also got a report that v5.11.21 is
broken:

https://bugzilla.kernel.org/show_bug.cgi?id=213055#c11

Please pick [1] as the dependency to [ Upstream commit
ef2126c4e2ea2b92f543fae00a2a0332e4573c48 ].

what is [1]???

What commit do I need to backport, a commit id would be nice...

thanks,

greg k-h

Sure Greg. Commit id is: 4884362f6977fc05cbec736625665241c0e0732f

Title of patch:
bus: mhi: core: Download AMSS image from appropriate function

It was supposed to be a link but not sure why it's not seen.

Text email doesn't have links :)

Anyway, thanks, now queued up.

I'm now getting confirmations that this issue is fixed in v5.12.6.
Thanks for the quick fix and the quick new release!

-- 
https://patchwork.kernel.org/project/linux-wireless/list/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches