With the previous two changes it doesn't protect anything any more.
v2: Use _unlocked unreference variant.
v3: Appease gcc noise.
Signed-off-by: Daniel Vetter daniel.vetter@intel.com --- drivers/gpu/drm/vgem/vgem_drv.c | 17 ++++------------- 1 file changed, 4 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/vgem/vgem_drv.c b/drivers/gpu/drm/vgem/vgem_drv.c index 75f18987411a..ae4de36d1d83 100644 --- a/drivers/gpu/drm/vgem/vgem_drv.c +++ b/drivers/gpu/drm/vgem/vgem_drv.c @@ -89,7 +89,6 @@ int vgem_gem_get_pages(struct drm_vgem_gem_object *obj) static int vgem_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) { struct drm_vgem_gem_object *obj = vma->vm_private_data; - struct drm_device *dev = obj->base.dev; loff_t num_pages; pgoff_t page_offset; int ret; @@ -103,12 +102,8 @@ static int vgem_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) if (page_offset > num_pages) return VM_FAULT_SIGBUS;
- mutex_lock(&dev->struct_mutex); - ret = vm_insert_page(vma, (unsigned long)vmf->virtual_address, obj->pages[page_offset]); - - mutex_unlock(&dev->struct_mutex); switch (ret) { case 0: return VM_FAULT_NOPAGE; @@ -205,12 +200,9 @@ int vgem_gem_dumb_map(struct drm_file *file, struct drm_device *dev, int ret = 0; struct drm_gem_object *obj;
- mutex_lock(&dev->struct_mutex); obj = drm_gem_object_lookup(dev, file, handle); - if (!obj) { - ret = -ENOENT; - goto unlock; - } + if (!obj) + return -ENOENT;
ret = drm_gem_create_mmap_offset(obj); if (ret) @@ -223,9 +215,8 @@ int vgem_gem_dumb_map(struct drm_file *file, struct drm_device *dev, *offset = drm_vma_node_offset_addr(&obj->vma_node);
unref: - drm_gem_object_unreference(obj); -unlock: - mutex_unlock(&dev->struct_mutex); + drm_gem_object_unreference_unlocked(obj); + return ret; }