[PATCH 6/8] usb: gadget: uvc: configfs: Document the bFormatIndex attribute

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Document for the bFormatIndex attribute of the format descriptors is
missing. Add it.

Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
 Documentation/ABI/testing/configfs-usb-gadget-uvc | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/ABI/testing/configfs-usb-gadget-uvc b/Documentation/ABI/testing/configfs-usb-gadget-uvc
index 9281e2aa38df..9896c8aa0e14 100644
--- a/Documentation/ABI/testing/configfs-usb-gadget-uvc
+++ b/Documentation/ABI/testing/configfs-usb-gadget-uvc
@@ -160,6 +160,10 @@ Description:	Specific MJPEG format descriptors
 
 		All attributes read only,
 		except bmaControls and bDefaultFrameIndex:
+		bFormatIndex		- unique id for this format descriptor;
+					only defined after parent header is
+					linked into the streaming class;
+					read-only
 		bmaControls		- this format's data for bmaControls in
 					the streaming header
 		bmInterfaceFlags	- specifies interlace information,
@@ -204,6 +208,10 @@ Date:		Dec 2014
 KernelVersion:	4.0
 Description:	Specific uncompressed format descriptors
 
+		bFormatIndex		- unique id for this format descriptor;
+					only defined after parent header is
+					linked into the streaming class;
+					read-only
 		bmaControls		- this format's data for bmaControls in
 					the streaming header
 		bmInterfaceFlags	- specifies interlace information,
-- 
Regards,

Laurent Pinchart

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