On Mon, Oct 10, 2022 at 10:21:35PM +0200, Greg KH wrote:
On Mon, Oct 10, 2022 at 08:20:28PM +0200, Michael Grzeschik wrote:For the userspace it is needed to distinguish between requests for the control or streaming interface. The userspace would have to parse the configfs to know which interface index it has to compare the ctrl requests against. Since the interface numbers are not fixed, e.g. for composite gadgets, the interface offset depends on the setup. The kernel has this information when handing over the ctrl request to the userspace. This patch removes the offset from the interface numbers and expose the default interface defines in the uapi g_uvc.h. Signed-off-by: Michael Grzeschik <m.grzeschik@xxxxxxxxxxxxxx> --- drivers/usb/gadget/function/f_uvc.c | 16 +++++++++++++--- include/uapi/linux/usb/g_uvc.h | 3 +++ 2 files changed, 16 insertions(+), 3 deletions(-)This is a v2, what changed from v1?
v1 - v2: - removed the extra variable in struct uvc_event
- replacing the ctrl request bits in place
- included the move of the defualt interface defines to g_uvc.h
Thanks,
Michael
--
Pengutronix e.K. | |
Steuerwalder Str. 21 | http://www.pengutronix.de/ |
31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
Attachment:
signature.asc
Description: PGP signature
