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[media] em28xx: Don't initialize a var if won't be using it 

Fixes most cases of initializing a var but not using it.

There are still 3 cases at em28xx-alsa, were those vars should
probably be used.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2011-06-17 20:28:51 -03:00
parent 67a8dbbc4e
commit 00d2e7ad9d
4 changed files with 8 additions and 10 deletions
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9
drivers/media/video/em28xx/em28xx-audio.c
View File

@ -286,10 +286,9 @@ static int snd_em28xx_capture_open(struct snd_pcm_substream *substream)
runtime->hw = snd_em28xx_hw_capture;
if (dev->alt == 0 && dev->adev.users == 0) {
int errCode;
dev->alt = 7;
dprintk("changing alternate number to 7\n");
errCode = usb_set_interface(dev->udev, 0, 7);
usb_set_interface(dev->udev, 0, 7);
}
dev->adev.users++;
@ -342,6 +341,8 @@ static int snd_em28xx_hw_capture_params(struct snd_pcm_substream *substream,
ret = snd_pcm_alloc_vmalloc_buffer(substream,
params_buffer_bytes(hw_params));
if (ret < 0)
return ret;
format = params_format(hw_params);
rate = params_rate(hw_params);
channels = params_channels(hw_params);
@ -393,7 +394,7 @@ static int snd_em28xx_capture_trigger(struct snd_pcm_substream *substream,
int cmd)
{
struct em28xx *dev = snd_pcm_substream_chip(substream);
int retval;
int retval = 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
@ -406,7 +407,7 @@ static int snd_em28xx_capture_trigger(struct snd_pcm_substream *substream,
retval = -EINVAL;
}
schedule_work(&dev->wq_trigger);
return 0;
return retval;
}
static snd_pcm_uframes_t snd_em28xx_capture_pointer(struct snd_pcm_substream

3
drivers/media/video/em28xx/em28xx-cards.c
View File

@ -2660,10 +2660,9 @@ void em28xx_card_setup(struct em28xx *dev)
.addr = 0xba >> 1,
.platform_data = &pdata,
};
struct v4l2_subdev *sd;
pdata.xtal = dev->sensor_xtal;
sd = v4l2_i2c_new_subdev_board(&dev->v4l2_dev, &dev->i2c_adap,
v4l2_i2c_new_subdev_board(&dev->v4l2_dev, &dev->i2c_adap,
&mt9v011_info, NULL);
}

4
drivers/media/video/em28xx/em28xx-core.c
View File

@ -917,7 +917,7 @@ EXPORT_SYMBOL_GPL(em28xx_set_mode);
static void em28xx_irq_callback(struct urb *urb)
{
struct em28xx *dev = urb->context;
int rc, i;
int i;
switch (urb->status) {
case 0: /* success */
@ -934,7 +934,7 @@ static void em28xx_irq_callback(struct urb *urb)
/* Copy data from URB */
spin_lock(&dev->slock);
rc = dev->isoc_ctl.isoc_copy(dev, urb);
dev->isoc_ctl.isoc_copy(dev, urb);
spin_unlock(&dev->slock);
/* Reset urb buffers */

2
drivers/media/video/em28xx/em28xx-i2c.c
View File

@ -218,9 +218,7 @@ static int em28xx_i2c_recv_bytes(struct em28xx *dev, unsigned char addr,
*/
static int em28xx_i2c_check_for_device(struct em28xx *dev, unsigned char addr)
{
char msg;
int ret;
msg = addr;
ret = dev->em28xx_read_reg_req(dev, 2, addr);
if (ret < 0) {