Re: Regression on linux-next (next-20250210)

["andriy.shevchenko@linux.intel.com" <andriy.shevchenko@linux.intel.com>]

The fix landed upstream, will be in next Linux Next.

c213375e3283 ("serial: 8250_dw: Call dw8250_quirks() conditionally")


On Sat, Feb 15, 2025 at 04:16:58PM +0000, Borah, Chaitanya Kumar wrote:
> Hello Andy,
> 
> Hope you are doing well. I am Chaitanya from the linux graphics team in Intel.
> 
> This mail is regarding a regression we are seeing in our CI runs[1] on linux-next repository.
> 
> Since the version next-20250210 [2], many machines in our CI are unable to boot.
> 
> Unfortunately, we have  not been able to collect any logs (even from pstore).
> 
> However after bisecting the tree, the following patch [3] seems to be the first "bad"
> commit
> 
> `````````````````````````````````````````````````````````````````````````````````````````````````````````
> commit bfd3d4a40f3905ec70b17dbfa9b78764e59e4b4f
> Author: Andy Shevchenko mailto:andriy.shevchenko@linux.intel.com
> Date:   Mon Feb 3 14:14:56 2025 +0200
> 
>     serial: 8250_dw: Drop unneeded NULL checks in dw8250_quirks()
> 
>     Since platform data is being provided for all supported hardware,
>     no need to NULL check for it. Drop unneeded checks.
> 
> `````````````````````````````````````````````````````````````````````````````````````````````````````````
> 
> We also verified that if we revert the patch the issue is not seen.
> 
> Could you please check why the patch causes this regression and provide a fix if necessary?
> 
> Thank you.
> 
> Regards
> 
> Chaitanya
> 
> [1] https://intel-gfx-ci.01.org/tree/linux-next/combined-alt.html?
> [2] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?h=next-20250210
> [3] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?h=next-20250210&id=bfd3d4a40f3905ec70b17dbfa9b78764e59e4b4f 
> 
> 

-- 
With Best Regards,
Andy Shevchenko