diff options
| author | Torleiv Sundre <torleiv@huddly.com> | 2019-04-28 01:21:13 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-06-11 12:21:58 -0400 |
| commit | 675e2f20b1139633876cdc8f621065fcbd582be9 (patch) | |
| tree | 919eac1e526615c60d62eed9fd0dc7e1c8fbfa60 /drivers/media/usb | |
| parent | 5800571960234f9d1f1011bf135799b2014d4268 (diff) | |
| download | linux-675e2f20b1139633876cdc8f621065fcbd582be9.tar.bz2 | |
media: uvcvideo: Include streaming interface number in debugfs dir name
uvcvideo creates a debugfs directory based on the device bus number and
device number. If a device contains more than one uvc function, the
creation of the second and following debugfs directories will fail and
print an info message like this:
"uvcvideo: Unable to create debugfs 3-2 directory."
This patch includes the uvc streaming interface number in the debugfs
directory name, to make sure it is unique. The directory name format is
changed from "<busnum>-<devnum>" to "<busnum>-<devnum>-<intfnum>"
Signed-off-by: Torleiv Sundre <torleiv@huddly.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/usb')
| -rw-r--r-- | drivers/media/usb/uvc/uvc_debugfs.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/media/usb/uvc/uvc_debugfs.c b/drivers/media/usb/uvc/uvc_debugfs.c index 8ba54139a087..d2b109959d82 100644 --- a/drivers/media/usb/uvc/uvc_debugfs.c +++ b/drivers/media/usb/uvc/uvc_debugfs.c @@ -74,12 +74,13 @@ void uvc_debugfs_init_stream(struct uvc_streaming *stream) { struct usb_device *udev = stream->dev->udev; struct dentry *dent; - char dir_name[32]; + char dir_name[33]; if (uvc_debugfs_root_dir == NULL) return; - sprintf(dir_name, "%u-%u", udev->bus->busnum, udev->devnum); + 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)) { |