Andrzej Pietrasiewicz fd83ff901d usb: gadget: webcam: Make g_webcam loadable again ... [ Upstream commit f1fd91a0924b6bff91ca1287461fb8e3b3b61d92 ] commit 588b9e8560 ("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: 588b9e8560 ("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> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-01-25 15:35:53 -08:00
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function	usb: gadget: webcam: Make g_webcam loadable again	2024-01-25 15:35:53 -08:00
legacy	usb: gadget: webcam: Make g_webcam loadable again	2024-01-25 15:35:53 -08:00
udc	USB: gadget: core: adjust uevent timing on gadget unbind	2023-12-13 18:45:33 +01:00
Kconfig	usb: gadget: Add support for USB MIDI 2.0 function driver	2023-07-26 06:38:14 +02:00
Makefile	usb: gadget: Makefile: remove ccflags-y	2022-03-18 12:56:08 +01:00
composite.c	usb: gadget: composite: cleanup function config_ep_by_speed_and_alt()	2023-08-22 14:48:33 +02:00
config.c	usb: gadget: config: remove max speed check in usb_assign_descriptors()	2023-08-22 14:48:33 +02:00
configfs.c	usb: gadget: Properly configure the device for remote wakeup	2023-03-29 10:27:00 +02:00
configfs.h	…
epautoconf.c	usb: gadget: fix for a typo that conveys logically-inverted information.	2021-09-14 10:27:54 +02:00
functions.c	…
u_f.c	…
u_f.h	USB: gadget: u_f: Unbreak offset calculation in VLAs	2020-08-27 09:25:06 +02:00
u_os_desc.h	…
usbstring.c	…