[SRU][OEM-B-OSP1/E/F/OEM-5.6/unstable][PATCH 0/1] alsa/sof: kernel oops on the machine without Intel hdmi audio codec (a regression in the asoc machine driver)

[Timo Aaltonen]

On 23.4.2020 4.24, Hui Wang wrote:
> BugLink: https://bugs.launchpad.net/bugs/1871284
> 
> Please apply the fix for #1872569 first, then apply this patch.
> 
> [Impact]
> The fix for #1872569 introduces a regression, the driver access a
> NULL pointer on the machiens without Intel hdmi audio codec.
> 
> [Fix]
> pick a fixing patch from alsa/asoc repo, the patch doesn't assume
> the first rtd is for hda codec, it will look for that rtd through
> strstr()
> 
> [Test Case]
> Boot the kenrel on those 2 Dell and 2 Lenovo machines which uses
> this driver, the audio could work. disable the intel hdmi audio codec
> through bios, the analogue audio still works
> 
> 
> [Regression Risk]
> Low, I have tested this patch Lenovo / Dell machines, they all worked well.
> 
> 
> Kai Vehmanen (1):
>   UBUNTU: SAUCE: ASoC: intel/skl/hda - fix oops on systems without i915
>     audio codec
> 
>  sound/soc/intel/boards/skl_hda_dsp_generic.c | 34 +++++++++++---------
>  1 file changed, 18 insertions(+), 16 deletions(-)
> 

btw, the bug is 1874359 not 1871284



-- 
t