Re: [Intel-gfx] [PATCH v8 01/10] drm/atomic: Print debug message on atomic check failure

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On Wed, 2018-04-11 at 19:42 -0400, Lyude Paul wrote:
> Does what it says on the label, it's a little confusing debugging atomic
> check failures otherwise.
> 
> Cc: Manasi Navare <manasi.d.navare@xxxxxxxxx>
> Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> Signed-off-by: Lyude Paul <lyude@xxxxxxxxxx>
> ---
>  drivers/gpu/drm/drm_atomic.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
> index 7d25c42f22db..972a7e9634ab 100644
> --- a/drivers/gpu/drm/drm_atomic.c
> +++ b/drivers/gpu/drm/drm_atomic.c
> @@ -1705,8 +1705,11 @@ int drm_atomic_check_only(struct drm_atomic_state *state)
>  	if (config->funcs->atomic_check)
>  		ret = config->funcs->atomic_check(state->dev, state);
>  
> -	if (ret)
> +	if (ret) {
> +		DRM_DEBUG_ATOMIC("atomic driver check for %p failed: %d\n",
> +				 state, ret);
>  		return ret;
> +	}
>  

nit: Would have slightly looked better if the 'ret' check was moved
inside the branch for funcs->atomic_check.

Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>



>  	if (!state->allow_modeset) {
>  		for_each_new_crtc_in_state(state, crtc, crtc_state, i) {

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