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-rw-r--r--drivers/media/v4l2-core/v4l2-dev.c28
-rw-r--r--drivers/media/v4l2-core/v4l2-ioctl.c10
-rw-r--r--include/media/v4l2-dev.h3
-rw-r--r--include/media/v4l2-ioctl.h15
4 files changed, 36 insertions, 20 deletions
diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
index a13cc6123dd2..86bb93fd7db8 100644
--- a/drivers/media/v4l2-core/v4l2-dev.c
+++ b/drivers/media/v4l2-core/v4l2-dev.c
@@ -47,15 +47,15 @@ static ssize_t index_show(struct device *cd,
}
static DEVICE_ATTR_RO(index);
-static ssize_t debug_show(struct device *cd,
+static ssize_t dev_debug_show(struct device *cd,
struct device_attribute *attr, char *buf)
{
struct video_device *vdev = to_video_device(cd);
- return sprintf(buf, "%i\n", vdev->debug);
+ return sprintf(buf, "%i\n", vdev->dev_debug);
}
-static ssize_t debug_store(struct device *cd, struct device_attribute *attr,
+static ssize_t dev_debug_store(struct device *cd, struct device_attribute *attr,
const char *buf, size_t len)
{
struct video_device *vdev = to_video_device(cd);
@@ -66,10 +66,10 @@ static ssize_t debug_store(struct device *cd, struct device_attribute *attr,
if (res)
return res;
- vdev->debug = value;
+ vdev->dev_debug = value;
return len;
}
-static DEVICE_ATTR_RW(debug);
+static DEVICE_ATTR_RW(dev_debug);
static ssize_t name_show(struct device *cd,
struct device_attribute *attr, char *buf)
@@ -82,7 +82,7 @@ static DEVICE_ATTR_RO(name);
static struct attribute *video_device_attrs[] = {
&dev_attr_name.attr,
- &dev_attr_debug.attr,
+ &dev_attr_dev_debug.attr,
&dev_attr_index.attr,
NULL,
};
@@ -304,7 +304,8 @@ static ssize_t v4l2_read(struct file *filp, char __user *buf,
return -EINVAL;
if (video_is_registered(vdev))
ret = vdev->fops->read(filp, buf, sz, off);
- if (vdev->debug)
+ if ((vdev->dev_debug & V4L2_DEV_DEBUG_FOP) &&
+ (vdev->dev_debug & V4L2_DEV_DEBUG_STREAMING))
printk(KERN_DEBUG "%s: read: %zd (%d)\n",
video_device_node_name(vdev), sz, ret);
return ret;
@@ -320,7 +321,8 @@ static ssize_t v4l2_write(struct file *filp, const char __user *buf,
return -EINVAL;
if (video_is_registered(vdev))
ret = vdev->fops->write(filp, buf, sz, off);
- if (vdev->debug)
+ if ((vdev->dev_debug & V4L2_DEV_DEBUG_FOP) &&
+ (vdev->dev_debug & V4L2_DEV_DEBUG_STREAMING))
printk(KERN_DEBUG "%s: write: %zd (%d)\n",
video_device_node_name(vdev), sz, ret);
return ret;
@@ -335,7 +337,7 @@ static unsigned int v4l2_poll(struct file *filp, struct poll_table_struct *poll)
return DEFAULT_POLLMASK;
if (video_is_registered(vdev))
res = vdev->fops->poll(filp, poll);
- if (vdev->debug > 2)
+ if (vdev->dev_debug & V4L2_DEV_DEBUG_POLL)
printk(KERN_DEBUG "%s: poll: %08x\n",
video_device_node_name(vdev), res);
return res;
@@ -404,7 +406,7 @@ static unsigned long v4l2_get_unmapped_area(struct file *filp,
if (!video_is_registered(vdev))
return -ENODEV;
ret = vdev->fops->get_unmapped_area(filp, addr, len, pgoff, flags);
- if (vdev->debug)
+ if (vdev->dev_debug & V4L2_DEV_DEBUG_FOP)
printk(KERN_DEBUG "%s: get_unmapped_area (%d)\n",
video_device_node_name(vdev), ret);
return ret;
@@ -420,7 +422,7 @@ static int v4l2_mmap(struct file *filp, struct vm_area_struct *vm)
return -ENODEV;
if (video_is_registered(vdev))
ret = vdev->fops->mmap(filp, vm);
- if (vdev->debug)
+ if (vdev->dev_debug & V4L2_DEV_DEBUG_FOP)
printk(KERN_DEBUG "%s: mmap (%d)\n",
video_device_node_name(vdev), ret);
return ret;
@@ -450,7 +452,7 @@ static int v4l2_open(struct inode *inode, struct file *filp)
ret = -ENODEV;
}
- if (vdev->debug)
+ if (vdev->dev_debug & V4L2_DEV_DEBUG_FOP)
printk(KERN_DEBUG "%s: open (%d)\n",
video_device_node_name(vdev), ret);
/* decrease the refcount in case of an error */
@@ -467,7 +469,7 @@ static int v4l2_release(struct inode *inode, struct file *filp)
if (vdev->fops->release)
ret = vdev->fops->release(filp);
- if (vdev->debug)
+ if (vdev->dev_debug & V4L2_DEV_DEBUG_FOP)
printk(KERN_DEBUG "%s: release\n",
video_device_node_name(vdev));
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index faac2f4e0f3a..b08407225db1 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -2339,7 +2339,7 @@ static long __video_do_ioctl(struct file *file,
const struct v4l2_ioctl_info *info;
void *fh = file->private_data;
struct v4l2_fh *vfh = NULL;
- int debug = vfd->debug;
+ int dev_debug = vfd->dev_debug;
long ret = -ENOTTY;
if (ops == NULL) {
@@ -2388,11 +2388,15 @@ static long __video_do_ioctl(struct file *file,
}
done:
- if (debug) {
+ if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) {
+ if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) &&
+ (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF))
+ return ret;
+
v4l_printk_ioctl(video_device_node_name(vfd), cmd);
if (ret < 0)
pr_cont(": error %ld", ret);
- if (debug == V4L2_DEBUG_IOCTL)
+ if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG))
pr_cont("\n");
else if (_IOC_DIR(cmd) == _IOC_NONE)
info->debug(arg, write_only);
diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h
index eb76cfd47189..3e4fddfc840c 100644
--- a/include/media/v4l2-dev.h
+++ b/include/media/v4l2-dev.h
@@ -124,7 +124,8 @@ struct video_device
spinlock_t fh_lock; /* Lock for all v4l2_fhs */
struct list_head fh_list; /* List of struct v4l2_fh */
- int debug; /* Activates debug level*/
+ /* Internal device debug flags, not for use by drivers */
+ int dev_debug;
/* Video standard vars */
v4l2_std_id tvnorms; /* Supported tv norms */
diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
index 53605f0f9903..8537983b9b22 100644
--- a/include/media/v4l2-ioctl.h
+++ b/include/media/v4l2-ioctl.h
@@ -291,9 +291,18 @@ struct v4l2_ioctl_ops {
/* v4l debugging and diagnostics */
-/* Debug bitmask flags to be used on V4L2 */
-#define V4L2_DEBUG_IOCTL 0x01
-#define V4L2_DEBUG_IOCTL_ARG 0x02
+/* Device debug flags to be used with the video device debug attribute */
+
+/* Just log the ioctl name + error code */
+#define V4L2_DEV_DEBUG_IOCTL 0x01
+/* Log the ioctl name arguments + error code */
+#define V4L2_DEV_DEBUG_IOCTL_ARG 0x02
+/* Log the file operations open, release, mmap and get_unmapped_area */
+#define V4L2_DEV_DEBUG_FOP 0x04
+/* Log the read and write file operations and the VIDIOC_(D)QBUF ioctls */
+#define V4L2_DEV_DEBUG_STREAMING 0x08
+/* Log poll() */
+#define V4L2_DEV_DEBUG_POLL 0x10
/* Video standard functions */
extern const char *v4l2_norm_to_name(v4l2_std_id id);
generated by cgit (git 2.34.1) at 2024-06-27 03:38:28 +0000