diff options
Diffstat (limited to 'drivers/media/v4l2-core/v4l2-ioctl.c')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-ioctl.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 75658717961..b08407225db 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -1017,6 +1017,12 @@ static int v4l_querycap(const struct v4l2_ioctl_ops *ops, ret = ops->vidioc_querycap(file, fh, cap); cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT; + /* + * Drivers MUST fill in device_caps, so check for this and + * warn if it was forgotten. + */ + WARN_ON(!(cap->capabilities & V4L2_CAP_DEVICE_CAPS) || + !cap->device_caps); cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT; return ret; @@ -2333,7 +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) { @@ -2382,11 +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); |