diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-12-14 02:06:08 +0400 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-01-21 01:17:05 +0400 |
| commit | 58c0dca10614117cf4b385e3314e79e3b37fa66b (patch) | |
| tree | 3e535843a2940a28b1389e079437959da0294b79 /drivers/gpu/drm/drm_crtc.c | |
| parent | 468174f748603497e73dba9b5c6d1d9f71121486 (diff) | |
| download | linux-58c0dca10614117cf4b385e3314e79e3b37fa66b.tar.xz | |
drm: don't take modeset locks in getfb ioctl
We only need to push the fb unreference a bit down. While at it,
properly pass the return value from ->create_handle back to userspace.
Most drivers either return -ENODEV if they don't have a concept of
buffer objects (ast, cirrus, ...) or just install a handle for the
underlying gem object (which is ok since we hold a reference on that
through the framebuffer).
v2: Split out the ->create_handle rework in the individual drivers.
Reviewed-by: Rob Clark <rob@ti.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/drm_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/drm_crtc.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 2e6103c5d632..cba8c8bb789c 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -2542,19 +2542,14 @@ int drm_mode_getfb(struct drm_device *dev, { struct drm_mode_fb_cmd *r = data; struct drm_framebuffer *fb; - int ret = 0; + int ret; if (!drm_core_check_feature(dev, DRIVER_MODESET)) return -EINVAL; - drm_modeset_lock_all(dev); fb = drm_framebuffer_lookup(dev, r->fb_id); - if (!fb) { - ret = -EINVAL; - goto out; - } - /* fb is protect by the mode_config lock, so drop the ref immediately */ - drm_framebuffer_unreference(fb); + if (!fb) + return -EINVAL; r->height = fb->height; r->width = fb->width; @@ -2566,8 +2561,8 @@ int drm_mode_getfb(struct drm_device *dev, else ret = -ENODEV; -out: - drm_modeset_unlock_all(dev); + drm_framebuffer_unreference(fb); + return ret; } |