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| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-03-30 12:40:45 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-04-20 13:57:44 +0300 |
| commit | 91263622f1184b7650cac10f70b08aa7f142f900 (patch) | |
| tree | 9c992db854aa952efee392b09b2054d97a463e0d /drivers/gpu/drm/exynos/exynos_drm_gem.c | |
| parent | ca25d6b08f3351c4e655a6ef70f19da6569312ec (diff) | |
| download | linux-91263622f1184b7650cac10f70b08aa7f142f900.tar.xz | |
drm/exynos: Drop dev->struct_mutex from mmap offset function
Simply forgotten about this when I was doing my general cleansing of
simple gem mmap offset functions. There's nothing but core functions
called here, and they all have their own protection already.
Aside: DRM_ERROR for userspace controlled input isn't great, but
that's for another patch.
v2: Use _unlocked unreference (Daniel Stone).
Cc: Daniel Stone <daniel@fooishbar.org>
Cc: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1459330852-27668-7-git-send-email-daniel.vetter@ffwll.ch
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_gem.c')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_gem.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c index 2914d62d0d80..3b7209335df0 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_gem.c +++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c @@ -458,8 +458,6 @@ int exynos_drm_gem_dumb_map_offset(struct drm_file *file_priv, struct drm_gem_object *obj; int ret = 0; - mutex_lock(&dev->struct_mutex); - /* * get offset of memory allocated for drm framebuffer. * - this callback would be called by user application @@ -469,16 +467,13 @@ int exynos_drm_gem_dumb_map_offset(struct drm_file *file_priv, obj = drm_gem_object_lookup(dev, file_priv, handle); if (!obj) { DRM_ERROR("failed to lookup gem object.\n"); - ret = -EINVAL; - goto unlock; + return -EINVAL; } *offset = drm_vma_node_offset_addr(&obj->vma_node); DRM_DEBUG_KMS("offset = 0x%lx\n", (unsigned long)*offset); - drm_gem_object_unreference(obj); -unlock: - mutex_unlock(&dev->struct_mutex); + drm_gem_object_unreference_unlocked(obj); return ret; } |