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V4L/DVB (8506): empress: fix control handling oops

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Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Hans Verkuil 2008-07-26 09:04:06 -03:00 committed by Mauro Carvalho Chehab
parent 1052efe0fc
commit 531d83a3d3
3 changed files with 48 additions and 16 deletions
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20
drivers/media/video/saa7134/saa7134-empress.c
View File

@ -329,6 +329,22 @@ static int empress_g_ext_ctrls(struct file *file, void *priv,
return saa7134_i2c_call_saa6752(dev, VIDIOC_G_EXT_CTRLS, ctrls);
}
static int empress_g_ctrl(struct file *file, void *priv,
struct v4l2_control *c)
{
struct saa7134_dev *dev = file->private_data;
return saa7134_g_ctrl_internal(dev, NULL, c);
}
static int empress_s_ctrl(struct file *file, void *priv,
struct v4l2_control *c)
{
struct saa7134_dev *dev = file->private_data;
return saa7134_s_ctrl_internal(dev, NULL, c);
}
static int empress_queryctrl(struct file *file, void *priv,
struct v4l2_queryctrl *c)
{
@ -415,8 +431,8 @@ static const struct v4l2_ioctl_ops ts_ioctl_ops = {
.vidioc_queryctrl = empress_queryctrl,
.vidioc_querymenu = empress_querymenu,
.vidioc_g_ctrl = saa7134_g_ctrl,
.vidioc_s_ctrl = saa7134_s_ctrl,
.vidioc_g_ctrl = empress_g_ctrl,
.vidioc_s_ctrl = empress_s_ctrl,
};
/* ----------------------------------------------------------- */

40
drivers/media/video/saa7134/saa7134-video.c
View File

@ -1112,10 +1112,8 @@ static struct videobuf_queue_ops video_qops = {
/* ------------------------------------------------------------------ */
int saa7134_g_ctrl(struct file *file, void *priv, struct v4l2_control *c)
int saa7134_g_ctrl_internal(struct saa7134_dev *dev, struct saa7134_fh *fh, struct v4l2_control *c)
{
struct saa7134_fh *fh = priv;
struct saa7134_dev *dev = fh->dev;
const struct v4l2_queryctrl* ctrl;
ctrl = ctrl_by_id(c->id);
@ -1160,20 +1158,31 @@ int saa7134_g_ctrl(struct file *file, void *priv, struct v4l2_control *c)
}
return 0;
}
EXPORT_SYMBOL_GPL(saa7134_g_ctrl);
EXPORT_SYMBOL_GPL(saa7134_g_ctrl_internal);
int saa7134_s_ctrl(struct file *file, void *f, struct v4l2_control *c)
static int saa7134_g_ctrl(struct file *file, void *priv, struct v4l2_control *c)
{
struct saa7134_fh *fh = priv;
return saa7134_g_ctrl_internal(fh->dev, fh, c);
}
int saa7134_s_ctrl_internal(struct saa7134_dev *dev, struct saa7134_fh *fh, struct v4l2_control *c)
{
const struct v4l2_queryctrl* ctrl;
struct saa7134_fh *fh = f;
struct saa7134_dev *dev = fh->dev;
unsigned long flags;
int restart_overlay = 0;
int err = -EINVAL;
int err;
err = v4l2_prio_check(&dev->prio, &fh->prio);
if (0 != err)
return err;
/* When called from the empress code fh == NULL.
That needs to be fixed somehow, but for now this is
good enough. */
if (fh) {
err = v4l2_prio_check(&dev->prio, &fh->prio);
if (0 != err)
return err;
}
err = -EINVAL;
mutex_lock(&dev->lock);
@ -1274,7 +1283,14 @@ error:
mutex_unlock(&dev->lock);
return err;
}
EXPORT_SYMBOL_GPL(saa7134_s_ctrl);
EXPORT_SYMBOL_GPL(saa7134_s_ctrl_internal);
static int saa7134_s_ctrl(struct file *file, void *f, struct v4l2_control *c)
{
struct saa7134_fh *fh = f;
return saa7134_s_ctrl_internal(fh->dev, fh, c);
}
/* ------------------------------------------------------------------ */

4
drivers/media/video/saa7134/saa7134.h
View File

@ -663,8 +663,8 @@ extern unsigned int video_debug;
extern struct video_device saa7134_video_template;
extern struct video_device saa7134_radio_template;
int saa7134_g_ctrl(struct file *file, void *priv, struct v4l2_control *c);
int saa7134_s_ctrl(struct file *file, void *f, struct v4l2_control *c);
int saa7134_s_ctrl_internal(struct saa7134_dev *dev, struct saa7134_fh *fh, struct v4l2_control *c);
int saa7134_g_ctrl_internal(struct saa7134_dev *dev, struct saa7134_fh *fh, struct v4l2_control *c);
int saa7134_queryctrl(struct file *file, void *priv, struct v4l2_queryctrl *c);
int saa7134_videoport_init(struct saa7134_dev *dev);