Commit 08d6fd69 authored by Akash Kumar's avatar Akash Kumar Committed by Greg Kroah-Hartman
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usb: gadget: Increase max configuration interface to 32 



Currently, max configuration interfaces are limited to 16, which fails
for compositions containing 10 UVC configurations with interrupt ep
disabled along with other configurations , and we see bind failures
while allocating interface ID in uvc bind.

Increase max configuration interface to 32 to support any large
compositions limited to same size as usb device endpoints as
interfaces cannot be more than endpoints.

Signed-off-by: default avatarAkash Kumar <quic_akakum@quicinc.com>
Link: https://lore.kernel.org/r/20240801053003.15153-1-quic_akakum@quicinc.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 1380f158

include/linux/usb/composite.h

+1 −1
Original line number Diff line number Diff line
@@ -256,7 +256,7 @@ int config_ep_by_speed(struct usb_gadget *g, struct usb_function *f, 
			struct usb_ep *_ep);

int usb_func_wakeup(struct usb_function *func);



#define	MAX_CONFIG_INTERFACES		16	/* arbitrary; max 255 */

#define	MAX_CONFIG_INTERFACES		32



/**

 * struct usb_configuration - represents one gadget configuration