diff options
| author | Ondrej Zary <linux@rainbow-software.org> | 2011-06-11 10:28:59 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-07-27 17:53:07 -0300 |
| commit | 6a529c1a4a87e0f5d143ad3bc0d37179332f210e (patch) | |
| tree | 50b293832428289f8d8bcea7effabaee3be0b6d6 /sound/i2c | |
| parent | 9cd49719fda38613e9d7c712b11a54ea4ea005dc (diff) | |
| download | lwn-6a529c1a4a87e0f5d143ad3bc0d37179332f210e.tar.gz lwn-6a529c1a4a87e0f5d143ad3bc0d37179332f210e.zip | |
[media] tea575x: allow multiple opens
Change locking to allow tea575x-radio device to be opened multiple times.
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'sound/i2c')
| -rw-r--r-- | sound/i2c/other/tea575x-tuner.c | 22 |
1 files changed, 3 insertions, 19 deletions
diff --git a/sound/i2c/other/tea575x-tuner.c b/sound/i2c/other/tea575x-tuner.c index 0d7a659c494c..beb0e86537cd 100644 --- a/sound/i2c/other/tea575x-tuner.c +++ b/sound/i2c/other/tea575x-tuner.c @@ -282,26 +282,9 @@ static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) return 0; } -static int snd_tea575x_exclusive_open(struct file *file) -{ - struct snd_tea575x *tea = video_drvdata(file); - - return test_and_set_bit(0, &tea->in_use) ? -EBUSY : 0; -} - -static int snd_tea575x_exclusive_release(struct file *file) -{ - struct snd_tea575x *tea = video_drvdata(file); - - clear_bit(0, &tea->in_use); - return 0; -} - static const struct v4l2_file_operations tea575x_fops = { .owner = THIS_MODULE, - .open = snd_tea575x_exclusive_open, - .release = snd_tea575x_exclusive_release, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops tea575x_ioctl_ops = { @@ -340,13 +323,14 @@ int snd_tea575x_init(struct snd_tea575x *tea) if (snd_tea575x_read(tea) != 0x55AA) return -ENODEV; - tea->in_use = 0; tea->val = TEA575X_BIT_BAND_FM | TEA575X_BIT_SEARCH_10_40; tea->freq = 90500 * 16; /* 90.5Mhz default */ snd_tea575x_set_freq(tea); tea->vd = tea575x_radio; video_set_drvdata(&tea->vd, tea); + mutex_init(&tea->mutex); + tea->vd.lock = &tea->mutex; v4l2_ctrl_handler_init(&tea->ctrl_handler, 1); tea->vd.ctrl_handler = &tea->ctrl_handler; |