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| author | Andrzej Pietrasiewicz <andrzej.p@collabora.com> | 2023-12-15 16:16:14 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-12-15 20:27:38 +0300 |
| commit | f1fd91a0924b6bff91ca1287461fb8e3b3b61d92 (patch) | |
| tree | 9146457920e01e96456fa9daebe0679fccebd478 /drivers/usb/host | |
| parent | c51ffe929f3b34999ce19f413d3950ea72e1e5ad (diff) | |
| download | linux-f1fd91a0924b6bff91ca1287461fb8e3b3b61d92.tar.xz | |
usb: gadget: webcam: Make g_webcam loadable again
commit 588b9e85609b ("usb: gadget: uvc: add v4l2 enumeration api calls")
has rendered the precomposed (aka legacy) webcam gadget unloadable.
uvc_alloc() since then has depended on certain config groups being
available in configfs tree related to the UVC function. However, legacy
gadgets do not create anything in configfs, so uvc_alloc() must fail
with -ENOENT no matter what.
This patch mimics the required configfs hierarchy to satisfy the code which
inspects formats and frames found in uvcg_streaming_header.
This has been tested with guvcview on the host side, using vivid as a
source of video stream on the device side and using the userspace program
found at https://gitlab.freedesktop.org/camera/uvc-gadget.git.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Fixes: 588b9e85609b ("usb: gadget: uvc: add v4l2 enumeration api calls")
Link: https://lore.kernel.org/r/20231215131614.29132-1-andrzej.p@collabora.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host')
0 files changed, 0 insertions, 0 deletions