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V4L/DVB (7277): bttv: Re-enabling radio support requires the use of struct bttv_fh 

A number of the radio tuner ioctl functions are shared with the TV
tuner, these functions require a struct bttv_fh data structure to be
allocated and initialized.

Signed-off-by: Robert Fitzsimons <robfitz@273k.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Robert Fitzsimons 2008-04-01 11:41:54 -03:00 committed by Mauro Carvalho Chehab
parent 0e81a8ae37
commit 5cd3955cb8
1 changed files with 16 additions and 5 deletions
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21
drivers/media/video/bt8xx/bttv-driver.c
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@ -3415,6 +3415,7 @@ static int radio_open(struct inode *inode, struct file *file)
{
int minor = iminor(inode);
struct bttv *btv = NULL;
struct bttv_fh *fh;
unsigned int i;
dprintk("bttv: open minor=%d\n",minor);
@ -3429,12 +3430,19 @@ static int radio_open(struct inode *inode, struct file *file)
return -ENODEV;
dprintk("bttv%d: open called (radio)\n",btv->c.nr);
/* allocate per filehandle data */
fh = kmalloc(sizeof(*fh), GFP_KERNEL);
if (NULL == fh)
return -ENOMEM;
file->private_data = fh;
*fh = btv->init;
v4l2_prio_open(&btv->prio, &fh->prio);
mutex_lock(&btv->lock);
btv->radio_user++;
file->private_data = btv;
bttv_call_i2c_clients(btv,AUDC_SET_RADIO,NULL);
audio_input(btv,TVAUDIO_INPUT_RADIO);
@ -3444,7 +3452,8 @@ static int radio_open(struct inode *inode, struct file *file)
static int radio_release(struct inode *inode, struct file *file)
{
struct bttv *btv = file->private_data;
struct bttv_fh *fh = file->private_data;
struct bttv *btv = fh->btv;
struct rds_command cmd;
btv->radio_user--;
@ -3569,7 +3578,8 @@ static int radio_g_input(struct file *filp, void *priv, unsigned int *i)
static ssize_t radio_read(struct file *file, char __user *data,
size_t count, loff_t *ppos)
{
struct bttv *btv = file->private_data;
struct bttv_fh *fh = file->private_data;
struct bttv *btv = fh->btv;
struct rds_command cmd;
cmd.block_count = count/3;
cmd.buffer = data;
@ -3583,7 +3593,8 @@ static ssize_t radio_read(struct file *file, char __user *data,
static unsigned int radio_poll(struct file *file, poll_table *wait)
{
struct bttv *btv = file->private_data;
struct bttv_fh *fh = file->private_data;
struct bttv *btv = fh->btv;
struct rds_command cmd;
cmd.instance = file;
cmd.event_list = wait;