nvidiafb: remove open_lock mutex

Remove mutex from the nvidiafb_open/nvidiafb_release functions as these
operations are mutexed at fb layer.

Signed-off-by: Alessio Igor Bogani <abogani@texware.it>
Cc: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 0 insertions, 7 deletions

diff --git a/drivers/video/nvidia/nvidia.c b/drivers/video/nvidia/nvidia.c
index 9dbb5a5a267..efe10ff86d6 100644
--- a/drivers/video/nvidia/nvidia.c
+++ b/drivers/video/nvidia/nvidia.c
@@ -1004,15 +1004,12 @@ static int nvidiafb_open(struct fb_info *info, int user)
 {
         struct nvidia_par *par = info->par;
 
-        mutex_lock(&par->open_lock);
-
         if (!par->open_count) {
                 save_vga_x86(par);
                 nvidia_save_vga(par, &par->initial_state);
         }
 
         par->open_count++;
-        mutex_unlock(&par->open_lock);
         return 0;
 }
 
@@ -1021,8 +1018,6 @@ static int nvidiafb_release(struct fb_info *info, int user)
         struct nvidia_par *par = info->par;
         int err = 0;
 
-        mutex_lock(&par->open_lock);
-
         if (!par->open_count) {
                 err = -EINVAL;
                 goto done;
@@ -1035,7 +1030,6 @@ static int nvidiafb_release(struct fb_info *info, int user)
 
         par->open_count--;
 done:
-        mutex_unlock(&par->open_lock);
         return err;
 }
 
@@ -1300,7 +1294,6 @@ static int __devinit nvidiafb_probe(struct pci_dev *pd,
 
         par = info->par;
         par->pci_dev = pd;
-        mutex_init(&par->open_lock);
         info->pixmap.addr = kzalloc(8 * 1024, GFP_KERNEL);
 
         if (info->pixmap.addr == NULL)