Commit 67412d15 authored by Joonyoung Shim's avatar Joonyoung Shim Committed by Inki Dae

drm/exynos: remove mutex locking in pagefault handler

There is no reason to use mutex locking in pagefault handler.
Signed-off-by: default avatarJoonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
parent 23597e26
...@@ -560,7 +560,6 @@ int exynos_drm_gem_dumb_map_offset(struct drm_file *file_priv, ...@@ -560,7 +560,6 @@ int exynos_drm_gem_dumb_map_offset(struct drm_file *file_priv,
int exynos_drm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) 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_gem_object *obj = vma->vm_private_data;
struct drm_device *dev = obj->dev;
unsigned long f_vaddr; unsigned long f_vaddr;
pgoff_t page_offset; pgoff_t page_offset;
int ret; int ret;
...@@ -569,14 +568,10 @@ int exynos_drm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) ...@@ -569,14 +568,10 @@ int exynos_drm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
vma->vm_start) >> PAGE_SHIFT; vma->vm_start) >> PAGE_SHIFT;
f_vaddr = (unsigned long)vmf->virtual_address; f_vaddr = (unsigned long)vmf->virtual_address;
mutex_lock(&dev->struct_mutex);
ret = exynos_drm_gem_map_buf(obj, vma, f_vaddr, page_offset); ret = exynos_drm_gem_map_buf(obj, vma, f_vaddr, page_offset);
if (ret < 0) if (ret < 0)
DRM_ERROR("failed to map a buffer with user.\n"); DRM_ERROR("failed to map a buffer with user.\n");
mutex_unlock(&dev->struct_mutex);
switch (ret) { switch (ret) {
case 0: case 0:
case -ERESTARTSYS: case -ERESTARTSYS:
......
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