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>

diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h
index 4b6b928..8675e14 100644 (file)
--- a/include/linux/usb/composite.h
+++ b/include/linux/usb/composite.h
@@ -52,7 +52,7 @@
 #define USB_GADGET_DELAYED_STATUS       0x7fff /* Impossibly large value */
 
 /* big enough to hold our biggest descriptor */
-#define USB_COMP_EP0_BUFSIZ    1024
+#define USB_COMP_EP0_BUFSIZ    4096
 
 /* OS feature descriptor length <= 4kB */
 #define USB_COMP_EP0_OS_DESC_BUFSIZ    4096