diff options
| author | Hans Verkuil <hans.verkuil@cisco.com> | 2012-06-22 06:37:38 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-07-06 17:25:31 -0300 |
| commit | 80131fe06e0bdd7b429594493c1317ddede89a61 (patch) | |
| tree | 645af85d4922b22b7c457bcfcf1005b22e1439d6 /drivers/media/video/v4l2-dev.c | |
| parent | f18d8e07b28e2950679edaa4edaa7ce410dd57fc (diff) | |
[media] v4l2-dev.c: add debug sysfs entry
Since this could theoretically change the debug value while in the middle
of v4l2-ioctl.c, we make a copy of vfd->debug to ensure consistent debug
behavior.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/v4l2-dev.c')
| -rw-r--r-- | drivers/media/video/v4l2-dev.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c index 83dbb2ddff10..c2122e53f051 100644 --- a/drivers/media/video/v4l2-dev.c +++ b/drivers/media/video/v4l2-dev.c @@ -46,6 +46,29 @@ static ssize_t show_index(struct device *cd, return sprintf(buf, "%i\n", vdev->index); } +static ssize_t show_debug(struct device *cd, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(cd); + + return sprintf(buf, "%i\n", vdev->debug); +} + +static ssize_t set_debug(struct device *cd, struct device_attribute *attr, + const char *buf, size_t len) +{ + struct video_device *vdev = to_video_device(cd); + int res = 0; + u16 value; + + res = kstrtou16(buf, 0, &value); + if (res) + return res; + + vdev->debug = value; + return len; +} + static ssize_t show_name(struct device *cd, struct device_attribute *attr, char *buf) { @@ -56,6 +79,7 @@ static ssize_t show_name(struct device *cd, static struct device_attribute video_device_attrs[] = { __ATTR(name, S_IRUGO, show_name, NULL), + __ATTR(debug, 0644, show_debug, set_debug), __ATTR(index, S_IRUGO, show_index, NULL), __ATTR_NULL }; |