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path: root/linux/drivers/media/video/v4l2-dev.c
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Diffstat (limited to 'linux/drivers/media/video/v4l2-dev.c')
-rw-r--r--linux/drivers/media/video/v4l2-dev.c21
1 files changed, 10 insertions, 11 deletions
diff --git a/linux/drivers/media/video/v4l2-dev.c b/linux/drivers/media/video/v4l2-dev.c
index e6ae35df2..37b9a5076 100644
--- a/linux/drivers/media/video/v4l2-dev.c
+++ b/linux/drivers/media/video/v4l2-dev.c
@@ -44,6 +44,7 @@ static ssize_t show_index(struct device *cd,
struct device_attribute *attr, char *buf)
{
struct video_device *vfd = container_of(cd, struct video_device, dev);
+
return sprintf(buf, "%i\n", vfd->index);
}
@@ -51,6 +52,7 @@ static ssize_t show_name(struct device *cd,
struct device_attribute *attr, char *buf)
{
struct video_device *vfd = container_of(cd, struct video_device, dev);
+
return sprintf(buf, "%.*s\n", (int)sizeof(vfd->name), vfd->name);
}
@@ -63,12 +65,14 @@ static struct device_attribute video_device_attrs[] = {
static ssize_t show_index(struct class_device *cd, char *buf)
{
struct video_device *vfd = container_of(cd, struct video_device, dev);
+
return sprintf(buf, "%i\n", vfd->index);
}
static ssize_t show_name(struct class_device *cd, char *buf)
{
struct video_device *vfd = container_of(cd, struct video_device, dev);
+
return sprintf(buf, "%.*s\n", (int)sizeof(vfd->name), vfd->name);
}
@@ -78,10 +82,7 @@ static CLASS_DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
struct video_device *video_device_alloc(void)
{
- struct video_device *vfd;
-
- vfd = kzalloc(sizeof(*vfd), GFP_KERNEL);
- return vfd;
+ return kzalloc(sizeof(struct video_device), GFP_KERNEL);
}
EXPORT_SYMBOL(video_device_alloc);
@@ -298,7 +299,7 @@ int video_register_device_index(struct video_device *vfd, int type, int nr,
/* pick a minor number */
mutex_lock(&videodev_lock);
- if (nr >= 0 && nr < end-base) {
+ if (nr >= 0 && nr < end-base) {
/* use the one the driver asked for */
i = base + nr;
if (NULL != video_device[i]) {
@@ -330,7 +331,7 @@ int video_register_device_index(struct video_device *vfd, int type, int nr,
}
/* sysfs class */
- memset(&vfd->dev, 0x00, sizeof(vfd->dev));
+ memset(&vfd->dev, 0, sizeof(vfd->dev));
vfd->dev.class = &video_class;
vfd->dev.devt = MKDEV(VIDEO_MAJOR, vfd->minor);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)
@@ -349,16 +350,14 @@ int video_register_device_index(struct video_device *vfd, int type, int nr,
goto fail_minor;
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)
- ret = class_device_create_file(&vfd->dev,
- &class_device_attr_name);
+ ret = class_device_create_file(&vfd->dev, &class_device_attr_name);
if (ret < 0) {
printk(KERN_ERR "%s: class_device_create_file 'name' failed\n",
__func__);
class_device_unregister(&vfd->dev);
goto fail_minor;
}
- ret = class_device_create_file(&vfd->dev,
- &class_device_attr_index);
+ ret = class_device_create_file(&vfd->dev, &class_device_attr_index);
if (ret < 0) {
printk(KERN_ERR "%s: class_device_create_file 'index' failed\n",
__func__);
@@ -372,8 +371,8 @@ int video_register_device_index(struct video_device *vfd, int type, int nr,
fail_minor:
mutex_lock(&videodev_lock);
video_device[vfd->minor] = NULL;
- vfd->minor = -1;
mutex_unlock(&videodev_lock);
+ vfd->minor = -1;
return ret;
}
EXPORT_SYMBOL(video_register_device_index);