[Intel-gfx] [PATCH v2 08/12] drm/tegra: Handle drm_atomic_helper_swap_state failure

[Daniel Vetter]

On Tue, Jul 11, 2017 at 04:33:10PM +0200, Maarten Lankhorst wrote:
> drm_atomic_helper_swap_state() will be changed to interruptible waiting
> in the next few commits, so all drivers have to be changed to handling
> failure.
> 
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
> Cc: Thierry Reding <thierry.reding at gmail.com>
> Cc: Jonathan Hunter <jonathanh at nvidia.com>
> Cc: linux-tegra at vger.kernel.org

Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>

> ---
>  drivers/gpu/drm/tegra/drm.c | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
> index ad3d124a972d..3ba659a5940d 100644
> --- a/drivers/gpu/drm/tegra/drm.c
> +++ b/drivers/gpu/drm/tegra/drm.c
> @@ -100,7 +100,12 @@ static int tegra_atomic_commit(struct drm_device *drm,
>  	 * the software side now.
>  	 */
>  
> -	drm_atomic_helper_swap_state(state, true);
> +	err = drm_atomic_helper_swap_state(state, true);
> +	if (err) {
> +		mutex_unlock(&tegra->commit.lock);
> +		drm_atomic_helper_cleanup_planes(drm, state);
> +		return err;
> +	}
>  
>  	drm_atomic_state_get(state);
>  	if (nonblock)
> -- 
> 2.11.0
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch