ACK / APPLIED[Unstable]: [SRU][E/F/unstable][PATCH RESEND 0/1] alsa/sof: kernel oops on the machine without Intel hdmi audio codec (a regression in the asoc machine driver)

[Seth Forshee]

On Thu, Apr 30, 2020 at 09:17:52PM +0800, Hui Wang wrote:
> BugLink: https://bugs.launchpad.net/bugs/1874359
> 
> In the RESEND:
> fix the bug number, and this SRU already applied to OEM-B-OSP1 and
> OEM-5.6 kernel, so remove them form title.
> 
> 
> 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.

Acked-by: Seth Forshee <seth.forshee at canonical.com>

Applied to unstable/master, thanks!