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authorHans Verkuil <hverkuil@xs4all.nl>2008-08-23 05:31:47 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2008-10-12 09:36:53 -0200
commit7d43cd53c851e3cf04d73108d4e7e25a1104c6f5 (patch)
tree4fcf2e3148065f1727b630deefef9612610bf789
parent2f3d00250ae5b1d2727e2723da805290ec408503 (diff)
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>
-rw-r--r--drivers/media/video/arv.c19
-rw-r--r--drivers/media/video/bw-qcam.c21
-rw-r--r--drivers/media/video/bw-qcam.h1
-rw-r--r--drivers/media/video/c-qcam.c22
-rw-r--r--drivers/media/video/meye.c16
-rw-r--r--drivers/media/video/meye.h1
-rw-r--r--drivers/media/video/pms.c22
-rw-r--r--drivers/media/video/saa5246a.c30
-rw-r--r--drivers/media/video/saa5249.c47
-rw-r--r--drivers/media/video/w9966.c22
10 files changed, 128 insertions, 73 deletions
diff --git a/drivers/media/video/arv.c b/drivers/media/video/arv.c
index 9e436ad3d34b..0d4f9b683459 100644
--- a/drivers/media/video/arv.c
+++ b/drivers/media/video/arv.c
@@ -116,6 +116,7 @@ struct ar_device {
int width, height;
int frame_bytes, line_bytes;
wait_queue_head_t wait;
+ unsigned long in_use;
struct mutex lock;
};
@@ -742,10 +743,23 @@ void ar_release(struct video_device *vfd)
* Video4Linux Module functions
*
****************************************************************************/
+static struct ar_device ardev;
+
+static int ar_exclusive_open(struct inode *inode, struct file *file)
+{
+ return test_and_set_bit(0, &ardev.in_use) ? -EBUSY : 0;
+}
+
+static int ar_exclusive_release(struct inode *inode, struct file *file)
+{
+ clear_bit(0, &ardev.in_use);
+ return 0;
+}
+
static const struct file_operations ar_fops = {
.owner = THIS_MODULE,
- .open = video_exclusive_open,
- .release = video_exclusive_release,
+ .open = ar_exclusive_open,
+ .release = ar_exclusive_release,
.read = ar_read,
.ioctl = ar_ioctl,
#ifdef CONFIG_COMPAT
@@ -762,7 +776,6 @@ static struct video_device ar_template = {
};
#define ALIGN4(x) ((((int)(x)) & 0x3) == 0)
-static struct ar_device ardev;
static int __init ar_init(void)
{
diff --git a/drivers/media/video/bw-qcam.c b/drivers/media/video/bw-qcam.c
index 01f07707827f..e8e1bb122b59 100644
--- a/drivers/media/video/bw-qcam.c
+++ b/drivers/media/video/bw-qcam.c
@@ -894,10 +894,27 @@ static ssize_t qcam_read(struct file *file, char __user *buf,
return len;
}
+static int qcam_exclusive_open(struct inode *inode, struct file *file)
+{
+ struct video_device *dev = video_devdata(file);
+ struct qcam_device *qcam = (struct qcam_device *)dev;
+
+ return test_and_set_bit(0, &qcam->in_use) ? -EBUSY : 0;
+}
+
+static int qcam_exclusive_release(struct inode *inode, struct file *file)
+{
+ struct video_device *dev = video_devdata(file);
+ struct qcam_device *qcam = (struct qcam_device *)dev;
+
+ clear_bit(0, &qcam->in_use);
+ return 0;
+}
+
static const struct file_operations qcam_fops = {
.owner = THIS_MODULE,
- .open = video_exclusive_open,
- .release = video_exclusive_release,
+ .open = qcam_exclusive_open,
+ .release = qcam_exclusive_release,
.ioctl = qcam_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = v4l_compat_ioctl32,
diff --git a/drivers/media/video/bw-qcam.h b/drivers/media/video/bw-qcam.h
index 6701dafbc0da..8a60c5de0935 100644
--- a/drivers/media/video/bw-qcam.h
+++ b/drivers/media/video/bw-qcam.h
@@ -65,4 +65,5 @@ struct qcam_device {
int top, left;
int status;
unsigned int saved_bits;
+ unsigned long in_use;
};
diff --git a/drivers/media/video/c-qcam.c b/drivers/media/video/c-qcam.c
index 7f6c6b4bec10..2196c1dc5aee 100644
--- a/drivers/media/video/c-qcam.c
+++ b/drivers/media/video/c-qcam.c
@@ -51,6 +51,7 @@ struct qcam_device {
int contrast, brightness, whitebal;
int top, left;
unsigned int bidirectional;
+ unsigned long in_use;
struct mutex lock;
};
@@ -687,11 +688,28 @@ static ssize_t qcam_read(struct file *file, char __user *buf,
return len;
}
+static int qcam_exclusive_open(struct inode *inode, struct file *file)
+{
+ struct video_device *dev = video_devdata(file);
+ struct qcam_device *qcam = (struct qcam_device *)dev;
+
+ return test_and_set_bit(0, &qcam->in_use) ? -EBUSY : 0;
+}
+
+static int qcam_exclusive_release(struct inode *inode, struct file *file)
+{
+ struct video_device *dev = video_devdata(file);
+ struct qcam_device *qcam = (struct qcam_device *)dev;
+
+ clear_bit(0, &qcam->in_use);
+ return 0;
+}
+
/* video device template */
static const struct file_operations qcam_fops = {
.owner = THIS_MODULE,
- .open = video_exclusive_open,
- .release = video_exclusive_release,
+ .open = qcam_exclusive_open,
+ .release = qcam_exclusive_release,
.ioctl = qcam_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = v4l_compat_ioctl32,
diff --git a/drivers/media/video/meye.c b/drivers/media/video/meye.c
index 102a5b9cfd12..6418f4a78f2a 100644
--- a/drivers/media/video/meye.c
+++ b/drivers/media/video/meye.c
@@ -843,21 +843,16 @@ again:
static int meye_open(struct inode *inode, struct file *file)
{
- int i, err;
+ int i;
- lock_kernel();
- err = video_exclusive_open(inode, file);
- if (err < 0) {
- unlock_kernel();
- return err;
- }
+ if (test_and_set_bit(0, &meye.in_use))
+ return -EBUSY;
mchip_hic_stop();
if (mchip_dma_alloc()) {
printk(KERN_ERR "meye: mchip framebuffer allocation failed\n");
- video_exclusive_release(inode, file);
- unlock_kernel();
+ clear_bit(0, &meye.in_use);
return -ENOBUFS;
}
@@ -865,7 +860,6 @@ static int meye_open(struct inode *inode, struct file *file)
meye.grab_buffer[i].state = MEYE_BUF_UNUSED;
kfifo_reset(meye.grabq);
kfifo_reset(meye.doneq);
- unlock_kernel();
return 0;
}
@@ -873,7 +867,7 @@ static int meye_release(struct inode *inode, struct file *file)
{
mchip_hic_stop();
mchip_dma_free();
- video_exclusive_release(inode, file);
+ clear_bit(0, &meye.in_use);
return 0;
}
diff --git a/drivers/media/video/meye.h b/drivers/media/video/meye.h
index d535748df445..5f70a106ba2b 100644
--- a/drivers/media/video/meye.h
+++ b/drivers/media/video/meye.h
@@ -311,6 +311,7 @@ struct meye {
struct video_device *video_dev; /* video device parameters */
struct video_picture picture; /* video picture parameters */
struct meye_params params; /* additional parameters */
+ unsigned long in_use; /* set to 1 if the device is in use */
#ifdef CONFIG_PM
u8 pm_mchip_mode; /* old mchip mode */
#endif
diff --git a/drivers/media/video/pms.c b/drivers/media/video/pms.c
index 7c84f795db54..b39794f0baf5 100644
--- a/drivers/media/video/pms.c
+++ b/drivers/media/video/pms.c
@@ -47,6 +47,7 @@ struct pms_device
struct video_picture picture;
int height;
int width;
+ unsigned long in_use;
struct mutex lock;
};
@@ -881,10 +882,27 @@ static ssize_t pms_read(struct file *file, char __user *buf,
return len;
}
+static int pms_exclusive_open(struct inode *inode, struct file *file)
+{
+ struct video_device *v = video_devdata(file);
+ struct pms_device *pd = (struct pms_device *)v;
+
+ return test_and_set_bit(0, &pd->in_use) ? -EBUSY : 0;
+}
+
+static int pms_exclusive_release(struct inode *inode, struct file *file)
+{
+ struct video_device *v = video_devdata(file);
+ struct pms_device *pd = (struct pms_device *)v;
+
+ clear_bit(0, &pd->in_use);
+ return 0;
+}
+
static const struct file_operations pms_fops = {
.owner = THIS_MODULE,
- .open = video_exclusive_open,
- .release = video_exclusive_release,
+ .open = pms_exclusive_open,
+ .release = pms_exclusive_release,
.ioctl = pms_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = v4l_compat_ioctl32,
diff --git a/drivers/media/video/saa5246a.c b/drivers/media/video/saa5246a.c
index e2c538ee88f2..5f5aa2063e0e 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;
}
diff --git a/drivers/media/video/saa5249.c b/drivers/media/video/saa5249.c
index 96c0fdf1a051..dfd8a9338c55 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;
}
diff --git a/drivers/media/video/w9966.c b/drivers/media/video/w9966.c
index 2ff00bc5ad64..c635cffb1fb8 100644
--- a/drivers/media/video/w9966.c
+++ b/drivers/media/video/w9966.c
@@ -113,6 +113,7 @@ struct w9966_dev {
signed char contrast;
signed char color;
signed char hue;
+ unsigned long in_use;
};
/*
@@ -184,10 +185,27 @@ static int w9966_v4l_ioctl(struct inode *inode, struct file *file,
static ssize_t w9966_v4l_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos);
+static int w9966_exclusive_open(struct inode *inode, struct file *file)
+{
+ struct video_device *vdev = video_devdata(file);
+ struct w9966_dev *cam = vdev->priv;
+
+ return test_and_set_bit(0, &cam->in_use) ? -EBUSY : 0;
+}
+
+static int w9966_exclusive_release(struct inode *inode, struct file *file)
+{
+ struct video_device *vdev = video_devdata(file);
+ struct w9966_dev *cam = vdev->priv;
+
+ clear_bit(0, &cam->in_use);
+ return 0;
+}
+
static const struct file_operations w9966_fops = {
.owner = THIS_MODULE,
- .open = video_exclusive_open,
- .release = video_exclusive_release,
+ .open = w9966_exclusive_open,
+ .release = w9966_exclusive_release,
.ioctl = w9966_v4l_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = v4l_compat_ioctl32,

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