usb: gadget: f_fs: handle control requests not directed to interface or endpoint

Introduces a new FunctionFS descriptor flag named
FUNCTIONFS_ALL_CTRL_RECIP. When this flag is enabled, control requests,
which are not explicitly directed to an interface or endpoint, can be
handled.

This allows FunctionFS userspace drivers to process non-standard
control requests.

Signed-off-by: Felix Hädicke <felixhaedicke@web.de>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/uapi/linux/usb/functionfs.h b/include/uapi/linux/usb/functionfs.h
index 108dd7997014..93da4ca82dc7 100644
--- a/include/uapi/linux/usb/functionfs.h
+++ b/include/uapi/linux/usb/functionfs.h
@@ -21,6 +21,7 @@ enum functionfs_flags {
         FUNCTIONFS_HAS_MS_OS_DESC = 8,
         FUNCTIONFS_VIRTUAL_ADDR = 16,
         FUNCTIONFS_EVENTFD = 32,
+        FUNCTIONFS_ALL_CTRL_RECIP = 64,
 };
 
 /* Descriptor of an non-audio endpoint */