From 67412d15afb7cc34943157c4bce2cf138b579fd1 Mon Sep 17 00:00:00 2001
From: Joonyoung Shim <jy0922.shim@samsung.com>
Date: Tue, 28 Jul 2015 17:53:18 +0900
Subject: [PATCH] drm/exynos: remove mutex locking in pagefault handler
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>
---
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 f717d795e9ae3..0c53b858bfec8 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:
--
2.30.2