2 files changed, 23 insertions, 2 deletions

diff --git a/include/uapi/linux/usb/cdc-wdm.h b/include/uapi/linux/usb/cdc-wdm.h
new file mode 100644
index 000000000000..f03134feebd6
--- /dev/null
+++ b/include/uapi/linux/usb/cdc-wdm.h
@@ -0,0 +1,21 @@
+/*
+ * USB CDC Device Management userspace API definitions
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ */
+
+#ifndef _UAPI__LINUX_USB_CDC_WDM_H
+#define _UAPI__LINUX_USB_CDC_WDM_H
+
+/*
+ * This IOCTL is used to retrieve the wMaxCommand for the device,
+ * defining the message limit for both reading and writing.
+ *
+ * For CDC WDM functions this will be the wMaxCommand field of the
+ * Device Management Functional Descriptor.
+ */
+#define IOCTL_WDM_MAX_COMMAND _IOR('H', 0xA0, __u16)
+
+#endif /* _UAPI__LINUX_USB_CDC_WDM_H */
diff --git a/include/uapi/linux/usb/ch9.h b/include/uapi/linux/usb/ch9.h
index f738e25377ff..aa33fd1b2d4f 100644
--- a/include/uapi/linux/usb/ch9.h
+++ b/include/uapi/linux/usb/ch9.h
@@ -138,7 +138,7 @@
 
 /*
  * New Feature Selectors as added by USB 3.0
- * See USB 3.0 spec Table 9-6
+ * See USB 3.0 spec Table 9-7
  */
 #define USB_DEVICE_U1_ENABLE    48      /* dev may initiate U1 transition */
 #define USB_DEVICE_U2_ENABLE    49      /* dev may initiate U2 transition */
@@ -147,7 +147,7 @@
 
 #define USB_INTR_FUNC_SUSPEND_OPT_MASK  0xFF00
 /*
- * Suspend Options, Table 9-7 USB 3.0 spec
+ * Suspend Options, Table 9-8 USB 3.0 spec
  */
 #define USB_INTRF_FUNC_SUSPEND_LP       (1 << (8 + 0))
 #define USB_INTRF_FUNC_SUSPEND_RW       (1 << (8 + 1))