There is no reason to use mutex locking in pagefault handler.
Signed-off-by: Joonyoung Shim <jy0922.shim@xxxxxxxxxxx>
---
drivers/gpu/drm/exynos/exynos_drm_gem.c | 5 -----
1 file changed, 5 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c
index 752cb7c..4741226 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c
@@ -560,7 +560,6 @@ unlock:
int exynos_drm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
{
struct drm_gem_object *obj = vma->vm_private_data;
- struct drm_device *dev = obj->dev;
unsigned long f_vaddr;
pgoff_t page_offset;
int ret;
@@ -569,14 +568,10 @@ int exynos_drm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
vma->vm_start) >> PAGE_SHIFT;
f_vaddr = (unsigned long)vmf->virtual_address;
- mutex_lock(&dev->struct_mutex);
-
ret = exynos_drm_gem_map_buf(obj, vma, f_vaddr, page_offset);
if (ret < 0)
DRM_ERROR("failed to map a buffer with user.\n");
- mutex_unlock(&dev->struct_mutex);
-
switch (ret) {
case 0:
case -ERESTARTSYS:
--
1.9.1
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