From 7d43cd53c851e3cf04d73108d4e7e25a1104c6f5 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Sat, 23 Aug 2008 05:31:47 -0300 Subject: 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 Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/saa5249.c | 47 +++++++++++++++++-------------------------- 1 file changed, 18 insertions(+), 29 deletions(-) (limited to 'drivers/media/video/saa5249.c') diff --git a/drivers/media/video/saa5249.c b/drivers/media/video/saa5249.c index 96c0fdf1a05..dfd8a9338c5 100644 --- a/drivers/media/video/saa5249.c +++ b/drivers/media/video/saa5249.c @@ -110,6 +110,7 @@ struct saa5249_device int disp_mode; int virtual_mode; struct i2c_client *client; + unsigned long in_use; struct mutex lock; }; @@ -631,34 +632,27 @@ static int saa5249_ioctl(struct inode *inode, struct file *file, static int saa5249_open(struct inode *inode, struct file *file) { struct video_device *vd = video_devdata(file); - struct saa5249_device *t=vd->priv; - int err,pgbuf; + struct saa5249_device *t = vd->priv; + int pgbuf; - 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, 0, 0, -1) || /* Select R11 */ - /* Turn off parity checks (we do this ourselves) */ + if (i2c_senddata(t, 0, 0, -1) || /* Select R11 */ + /* Turn off parity checks (we do this ourselves) */ i2c_senddata(t, 1, disp_modes[t->disp_mode][0], 0, -1) || - /* Display TV-picture, no virtual rows */ - i2c_senddata(t, 4, NUM_DAUS, disp_modes[t->disp_mode][1], disp_modes[t->disp_mode][2], 7, -1)) /* Set display to page 4 */ - + /* Display TV-picture, no virtual rows */ + i2c_senddata(t, 4, NUM_DAUS, disp_modes[t->disp_mode][1], disp_modes[t->disp_mode][2], 7, -1)) + /* Set display to page 4 */ { - err = -EIO; - goto fail; + clear_bit(0, &t->in_use); + return -EIO; } - for (pgbuf = 0; pgbuf < NUM_DAUS; pgbuf++) - { + for (pgbuf = 0; pgbuf < NUM_DAUS; pgbuf++) { memset(t->vdau[pgbuf].pgbuf, ' ', sizeof(t->vdau[0].pgbuf)); memset(t->vdau[pgbuf].sregs, 0, sizeof(t->vdau[0].sregs)); memset(t->vdau[pgbuf].laststat, 0, sizeof(t->vdau[0].laststat)); @@ -668,13 +662,7 @@ static int saa5249_open(struct inode *inode, struct file *file) t->is_searching[pgbuf] = false; } t->virtual_mode = false; - unlock_kernel(); return 0; - - fail: - video_exclusive_release(inode,file); - unlock_kernel(); - return err; } @@ -682,10 +670,11 @@ static int saa5249_open(struct inode *inode, struct file *file) static int saa5249_release(struct inode *inode, struct file *file) { struct video_device *vd = video_devdata(file); - struct saa5249_device *t=vd->priv; + struct saa5249_device *t = vd->priv; + i2c_senddata(t, 1, 0x20, -1); /* Turn off CCT */ i2c_senddata(t, 5, 3, 3, -1); /* Turn off TV-display */ - video_exclusive_release(inode,file); + clear_bit(0, &t->in_use); return 0; } -- cgit v1.2.3