[Intel-gfx] [PATCH] drm: Only take cursor locks when the cursor plane exists
Sean Paul
seanpaul at chromium.org
Fri Apr 7 17:33:30 UTC 2017
On Fri, Apr 07, 2017 at 06:48:17PM +0200, Daniel Vetter wrote:
> I thought I've fixed this, but maybe not. Anyway, clearly broken, and
> easy fix.
>
> Cc: Tony Lindgren <tony at atomide.com>
> Reported-by: Tony Lindgren <tony at atomide.com>
> Fixes: b95ff0319a82 ("drm: Remove drm_modeset_(un)lock_crtc")
> Cc: Harry Wentland <harry.wentland at amd.com>
> Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
> Cc: Daniel Vetter <daniel.vetter at intel.com>
> Cc: Jani Nikula <jani.nikula at linux.intel.com>
> Cc: Sean Paul <seanpaul at chromium.org>
> Cc: David Airlie <airlied at linux.ie>
> Cc: dri-devel at lists.freedesktop.org
> Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
> ---
Applied to drm-misc
Thanks,
Sean
> drivers/gpu/drm/drm_plane.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
> index 838ca742a28b..fedd4d60d9cd 100644
> --- a/drivers/gpu/drm/drm_plane.c
> +++ b/drivers/gpu/drm/drm_plane.c
> @@ -720,15 +720,15 @@ static int drm_mode_cursor_common(struct drm_device *dev,
> ret = drm_modeset_lock(&crtc->mutex, &ctx);
> if (ret)
> goto out;
> - ret = drm_modeset_lock(&crtc->cursor->mutex, &ctx);
> - if (ret)
> - goto out;
> -
> /*
> * If this crtc has a universal cursor plane, call that plane's update
> * handler rather than using legacy cursor handlers.
> */
> if (crtc->cursor) {
> + ret = drm_modeset_lock(&crtc->cursor->mutex, &ctx);
> + if (ret)
> + goto out;
> +
> ret = drm_mode_cursor_universal(crtc, req, file_priv, &ctx);
> goto out;
> }
> --
> 2.11.0
--
Sean Paul, Software Engineer, Google / Chromium OS
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