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| author | Laurent Pinchart <[email protected]> | 2023-04-20 09:45:59 +0000 |
|---|---|---|
| committer | Mauro Carvalho Chehab <[email protected]> | 2023-06-02 17:48:02 +0000 |
| commit | 81f3affa19d6ab0c32aef46b053838219eef7e71 (patch) | |
| tree | 2e2b64b8eb598dbd6a1294708667edfba531aa3b /drivers/usb/cdns3/cdns3-gadget.c | |
| parent | media: v4l2-subdev: Fix missing kerneldoc for client_caps (diff) | |
| download | kernel-81f3affa19d6ab0c32aef46b053838219eef7e71.tar.gz kernel-81f3affa19d6ab0c32aef46b053838219eef7e71.zip | |
media: uvcvideo: Don't expose unsupported formats to userspace
When the uvcvideo driver encounters a format descriptor with an unknown
format GUID, it creates a corresponding struct uvc_format instance with
the fcc field set to 0. Since commit 50459f103edf ("media: uvcvideo:
Remove format descriptions"), the driver relies on the V4L2 core to
provide the format description string, which the V4L2 core can't do
without a valid 4CC. This triggers a WARN_ON.
As a format with a zero 4CC can't be selected, it is unusable for
applications. Ignore the format completely without creating a uvc_format
instance, which fixes the warning.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217252
Link: https://bugzilla.redhat.com/show_bug.cgi?id=2180107
Fixes: 50459f103edf ("media: uvcvideo: Remove format descriptions")
Signed-off-by: Laurent Pinchart <[email protected]>
Reviewed-by: Ricardo Ribalda <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Diffstat (limited to 'drivers/usb/cdns3/cdns3-gadget.c')
0 files changed, 0 insertions, 0 deletions