From: Maarten Lankhorst Date: Tue, 12 Sep 2017 13:37:49 +0000 (+0200) Subject: drm/crtc: Convert setcrtc ioctl locking to interruptible. X-Git-Tag: v4.19~2077^2~62^2~11 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3fa6a073542fec11f388d687a4db5c64e1e347a4;p=platform%2Fkernel%2Flinux-rpi3.git drm/crtc: Convert setcrtc ioctl locking to interruptible. Pass DRM_MODESET_ACQUIRE_INTERRUPTIBLE to acquire_init, and handle drm_modeset_backoff which can now fail by returning the error. Signed-off-by: Maarten Lankhorst Cc: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20170912133749.6532-7-maarten.lankhorst@linux.intel.com Reviewed-by: Emil Velikov --- diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 5af25ce..68b4e97 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -577,7 +577,7 @@ int drm_mode_setcrtc(struct drm_device *dev, void *data, DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name); mutex_lock(&crtc->dev->mode_config.mutex); - drm_modeset_acquire_init(&ctx, 0); + drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE); retry: ret = drm_modeset_lock_all_ctx(crtc->dev, &ctx); if (ret) @@ -717,8 +717,9 @@ out: kfree(connector_set); drm_mode_destroy(dev, mode); if (ret == -EDEADLK) { - drm_modeset_backoff(&ctx); - goto retry; + ret = drm_modeset_backoff(&ctx); + if (!ret) + goto retry; } drm_modeset_drop_locks(&ctx); drm_modeset_acquire_fini(&ctx);