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usb: gadget: Increase max configuration interface to 32

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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: Akash Kumar <quic_akakum@quicinc.com>
Link: https://lore.kernel.org/r/20240801053003.15153-1-quic_akakum@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Akash Kumar
2024-08-01 11:00:03 +05:30
committed by Greg Kroah-Hartman
parent 1380f158a8
commit 08d6fd691b
1 changed files with 1 additions and 1 deletions
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include/linux/usb/composite.h
+1 -1
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@@ -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