V4L/DVB (8780): v4l: replace the last uses of video_exclusive_open/release

Handle the video_exclusive_open/release functionality inside the
driver.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 8 insertions, 22 deletions

diff --git a/drivers/media/video/saa5246a.c b/drivers/media/video/saa5246a.c
index e2c538ee88f..5f5aa2063e0 100644
--- a/drivers/media/video/saa5246a.c
+++ b/drivers/media/video/saa5246a.c
@@ -61,6 +61,7 @@ struct saa5246a_device
         u8     pgbuf[NUM_DAUS][VTX_VIRTUALSIZE];
         int    is_searching[NUM_DAUS];
         struct i2c_client *client;
+        unsigned long in_use;
         struct mutex lock;
 };
 
@@ -736,22 +737,14 @@ static int saa5246a_open(struct inode *inode, struct file *file)
 {
         struct video_device *vd = video_devdata(file);
         struct saa5246a_device *t = vd->priv;
-        int err;
 
-        lock_kernel();
-        err = video_exclusive_open(inode,file);
-        if (err < 0) {
-                unlock_kernel();
-                return err;
-        }
+        if (t->client == NULL)
+                return -ENODEV;
 
-        if (t->client==NULL) {
-                err = -ENODEV;
-                goto fail;
-        }
+        if (test_and_set_bit(0, &t->in_use))
+                return -EBUSY;
 
         if (i2c_senddata(t, SAA5246A_REGISTER_R0,
-
                 R0_SELECT_R11 |
                 R0_PLL_TIME_CONSTANT_LONG |
                 R0_ENABLE_nODD_EVEN_OUTPUT |
@@ -777,17 +770,10 @@ static int saa5246a_open(struct inode *inode, struct file *file)
 
                 COMMAND_END))
         {
-                err = -EIO;
-                goto fail;
+                clear_bit(0, &t->in_use);
+                return -EIO;
         }
-        unlock_kernel();
-
         return 0;
-
-fail:
-        video_exclusive_release(inode,file);
-        unlock_kernel();
-        return err;
 }
 
 static int saa5246a_release(struct inode *inode, struct file *file)
@@ -806,7 +792,7 @@ static int saa5246a_release(struct inode *inode, struct file *file)
                 R1_VCS_TO_SCS,
 
                 COMMAND_END);
-        video_exclusive_release(inode,file);
+        clear_bit(0, &t->in_use);
         return 0;
 }