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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>
This commit is contained in:
Hans Verkuil 2008-08-23 05:31:47 -03:00 committed by Mauro Carvalho Chehab
parent 2f3d00250a
commit 7d43cd53c8
10 changed files with 128 additions and 73 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/media/video/arv.c
View File

@ -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)
{

21
drivers/media/video/bw-qcam.c
View File

@ -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,

1
drivers/media/video/bw-qcam.h
View File

@ -65,4 +65,5 @@ struct qcam_device {
int top, left;
int status;
unsigned int saved_bits;
unsigned long in_use;
};

22
drivers/media/video/c-qcam.c
View File

@ -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,

16
drivers/media/video/meye.c
View File

@ -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;
}

1
drivers/media/video/meye.h
View File

@ -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

22
drivers/media/video/pms.c
View File

@ -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,

30
drivers/media/video/saa5246a.c
View File

@ -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;
}

47
drivers/media/video/saa5249.c
View File

@ -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;
}

22
drivers/media/video/w9966.c
View File

@ -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,