Re: [PATCH v4 2/3] usb: gadget: f_fs: add ioctl returning ep descriptor
From: Sergei Shtylyov
Date: Wed Aug 20 2014 - 07:50:53 EST
Hello.
On 8/20/2014 9:46 AM, Robert Baldyga wrote:
This patch introduces ioctl named FUNCTIONFS_ENDPOINT_DESC, which
returns endpoint descriptor to userspace. It works only if function
is active.
Signed-off-by: Robert Baldyga <r.baldyga@xxxxxxxxxxx>
[...]
diff --git a/include/uapi/linux/usb/functionfs.h b/include/uapi/linux/usb/functionfs.h
index 0154b28..900896e 100644
--- a/include/uapi/linux/usb/functionfs.h
+++ b/include/uapi/linux/usb/functionfs.h
@@ -265,6 +265,12 @@ struct usb_functionfs_event {
*/
#define FUNCTIONFS_ENDPOINT_REVMAP _IO('g', 129)
+/*
+ * Returns endpoint descriptor. In funciton is not active returns -ENODEV.
s/funciton/function/.
WBR, Sergei
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