[Sound-open-firmware] [External] Re: Whiskeylake support and kernel version

[Mark Pearson]

Hi Pierre,

The issue I'm seeing in the 5.2.9 kernel seems to be related to suspend and resume (crash in sof_suspend).

Are there any particular commits you can point to that might address just that problem? If the crash doesn't happen (rare) then the audio works fine so if I can get it stable it will be good enough for now.

Thanks!
Mark

> -----Original Message-----
> From: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
> Sent: Thursday, September 12, 2019 1:08 PM
> To: Mark Pearson <mpearson at lenovo.com>; Kai Vehmanen
> <kai.vehmanen at linux.intel.com>
> Cc: sound-open-firmware at alsa-project.org
> Subject: Re: [Sound-open-firmware] [External] Re: Whiskeylake support and
> kernel version
> 
> 
> 
> On 9/12/19 10:13 AM, Mark Pearson wrote:
> > Hi,
> >
> > If I wanted to backport the latest SOF support back to 5.2.9 (for the customer
> who wants that) - would that be a crazy thing to do? Any tips or pointers on
> doing that? Just update sound/soc/sof, include/uapi/sound/soc and
> include/sound/sof....maybe?
> 
> We have a dumb script that detects all the changes upstream and tries to apply
> them on top of whatever kernel version. It's dumb in the sense that it just picks
> in arbitrary libraries and contributor names, but it can get a working config. It'd
> have to be a custom build since we only take specific things and can't guarantee
> that the same backported stuff will work on all platforms.
> 
> The main problem is that there were a lot of reworks at the core level, with the
> 'modern' dai style, so I see 226 patches if you do this blindly.
> 
> # get all changes in broonie-next since last backport git log --oneline --reverse --
> no-merges v5.2.9..broonie/for-next \
>      > log_broonie.tmp
> 
> # get log based on directory (can be edited at will) git log --oneline --reverse --
> no-merges v5.2.9..broonie/for-next -- \
>      include/sound/sof/*.h include/uapi/sound/sof/*.h \
>      sound/pci/hda sound/hda \
>      sound/soc/sof/ \
>      > log_dir.tmp
> 
> # get log from sound/ and include/sound based on authors from intel git log --
> oneline --reverse --no-merges v5.2.9..broonie/for-next --author=intel.com --
> sound/ include/sound > log_intel.tmp
> 
> # merge SHA1s
> cat log_intel.tmp log_dir.tmp | sort -u > list.tmp
> 
> # extract the relevant SHA1s from the initial list grep -F -x -f list.tmp
> log_broonie.tmp > gitlog.txt
> 
> To apply the list (possibly edited), run this:
> cat gitlog.txt    | awk '{print $1}' > log1.tmp
> cat log1.tmp | git cherry-pick -x --stdin
> 
> Disclaimer: backport support is beyond the scope of the SOF development team.