Re: [PATCH v2 21/23] drm/msm: Support KMS backends without a display IRQ

[Dmitry Baryshkov]

On Mon, Oct 26, 2026 at 11:51:31AM +0530, Jayant Shekhar wrote:
> Some MSM KMS backends receive display events through firmware or

Which ones?

> another transport and therefore have no host-visible display interrupt.
> Rejecting such a backend during common KMS initialization prevents
> it from using the MSM DRM framework.
> 
> Allow KMS backends to use IRQ_NOTCONNECTED. DCP receives VSYNC and
> frame-scan completion as asynchronous HFI events over VirtIO; its IPCC
> interrupt is reserved for power-notify acknowledgments. Existing
> IRQ-backed KMS implementations retain their current request and
> teardown flow.

With the commit message fixed:

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>


> Assisted-by: LLM
> Signed-off-by: Jayant Shekhar <jayant.shekhar@xxxxxxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/msm/msm_kms.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 

-- 
With best wishes
Dmitry