Hi Greg,
Thank you for the patch.
On Tue, Aug 18, 2020 at 03:36:08PM +0200, Greg Kroah-Hartman wrote:
> When calling debugfs functions, there is no need to ever check the
> return value. The function can work or not, but the code logic should
> never do something different based on this.
Is there no value in warning the user that something went wrong ? Silent
failures are harder to debug.
> Cc: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> Cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
> Cc: linux-media@xxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> ---
> drivers/media/usb/uvc/uvc_debugfs.c | 20 ++++----------------
> 1 file changed, 4 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/media/usb/uvc/uvc_debugfs.c b/drivers/media/usb/uvc/uvc_debugfs.c
> index 2b8af4b54117..1a1258d4ffca 100644
> --- a/drivers/media/usb/uvc/uvc_debugfs.c
> +++ b/drivers/media/usb/uvc/uvc_debugfs.c
> @@ -73,7 +73,6 @@ static struct dentry *uvc_debugfs_root_dir;
> void uvc_debugfs_init_stream(struct uvc_streaming *stream)
> {
> struct usb_device *udev = stream->dev->udev;
> - struct dentry *dent;
> char dir_name[33];
>
> if (uvc_debugfs_root_dir == NULL)
> @@ -82,22 +81,11 @@ void uvc_debugfs_init_stream(struct uvc_streaming *stream)
> snprintf(dir_name, sizeof(dir_name), "%u-%u-%u", udev->bus->busnum,
> udev->devnum, stream->intfnum);
>
> - dent = debugfs_create_dir(dir_name, uvc_debugfs_root_dir);
> - if (IS_ERR_OR_NULL(dent)) {
> - uvc_printk(KERN_INFO, "Unable to create debugfs %s "
> - "directory.\n", dir_name);
> - return;
> - }
> -
> - stream->debugfs_dir = dent;
> + stream->debugfs_dir = debugfs_create_dir(dir_name,
> + uvc_debugfs_root_dir);
>
> - dent = debugfs_create_file("stats", 0444, stream->debugfs_dir,
> - stream, &uvc_debugfs_stats_fops);
> - if (IS_ERR_OR_NULL(dent)) {
> - uvc_printk(KERN_INFO, "Unable to create debugfs stats file.\n");
> - uvc_debugfs_cleanup_stream(stream);
> - return;
> - }
> + debugfs_create_file("stats", 0444, stream->debugfs_dir, stream,
> + &uvc_debugfs_stats_fops);
> }
>
> void uvc_debugfs_cleanup_stream(struct uvc_streaming *stream)
--
Regards,
Laurent Pinchart
