Re: [PATCH 2/4 6.12.y] drm/amd: Check whether secure display TA loaded successfully

[Greg KH <gregkh@linuxfoundation.org>]

On Sat, Oct 18, 2025 at 11:56:42AM -0500, Adrian Yip wrote:
> From: Mario Limonciello <mario.limonciello@amd.com>
> 
> commit c760bcda83571e07b72c10d9da175db5051ed971 upstream
> 
> [Why]
> Not all renoir hardware supports secure display.  If the TA is present
> but the feature isn't supported it will fail to load or send commands.
> This shows ERR messages to the user that make it seems like there is
> a problem.
> 
> [How]
> Check the resp_status of the context to see if there was an error
> before trying to send any secure display commands.
> 
> There were no code conflict when applying to 6.12.y.
> This backport gets rid of below error messages on AMD GPUs (per Shuah
> Khan's machine)
> 
>   kern  :err   :
>   amdgpu 0000:0b:00.0: amdgpu: Secure display: Generic Failure.
>   amdgpu 0000:0b:00.0: amdgpu: SECUREDISPLAY: query securedisplay TA
>     failed. ret 0x0
> 
> Compile test was done.

Also, you added text here in the changelog, which isn't generally good
as we want to keep the changelog text as close as possible, if not
identical, to the original so that it makes it easier to track patches
across branches.

thanks,

greg k-h