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drm/exynos: remove mutex locking in pagefault handler

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There is no reason to use mutex locking in pagefault handler.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Joonyoung Shim 2015-07-28 17:53:18 +09:00 committed by Inki Dae
parent 23597e2642
commit 67412d15af
1 changed files with 0 additions and 5 deletions
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5
drivers/gpu/drm/exynos/exynos_drm_gem.c
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@ -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: