Commit ed769520 authored Apr 26, 2018 by Joel Pepper Committed by Felipe Balbi Apr 27, 2018

usb: gadget: composite Allow for larger configuration descriptors



The composite framework allows us to create gadgets composed from many
different functions, which need to fit into a single configuration
descriptor.

Some functions (like uvc) can produce configuration descriptors upwards
of 2500 bytes on their own.

This patch increases the limit from 1024 bytes to 4096.

Signed-off-by: Joel Pepper <joel.pepper@rwth-aachen.de>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

parent 96bd39df

include/linux/usb/composite.h

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -52,7 +52,7 @@
	#define USB_GADGET_DELAYED_STATUS 0x7fff /* Impossibly large value */		#define USB_GADGET_DELAYED_STATUS 0x7fff /* Impossibly large value */

	/* big enough to hold our biggest descriptor */		/* big enough to hold our biggest descriptor */
	#define USB_COMP_EP0_BUFSIZ 1024		#define USB_COMP_EP0_BUFSIZ 4096

	/* OS feature descriptor length <= 4kB */		/* OS feature descriptor length <= 4kB */
	#define USB_COMP_EP0_OS_DESC_BUFSIZ 4096		#define USB_COMP_EP0_OS_DESC_BUFSIZ 4096