diff mbox series

USB: document ioctl USBDEVFS_GET_SPEED

Message ID 20230724092843.18410-1-oneukum@suse.com
State New
Headers show
Series USB: document ioctl USBDEVFS_GET_SPEED | expand

Commit Message

Oliver Neukum July 24, 2023, 9:28 a.m. UTC
Documenting this ioctl along with the other
ioctls

Fixes: c01b244ad848a ("USB: add usbfs ioctl to retrieve the connection speed")
Signed-off-by: Oliver Neukum <oneukum@suse.com>
---
 Documentation/driver-api/usb/usb.rst | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox series

Patch

diff --git a/Documentation/driver-api/usb/usb.rst b/Documentation/driver-api/usb/usb.rst
index 2c94ff2f4385..0fcd75ee5897 100644
--- a/Documentation/driver-api/usb/usb.rst
+++ b/Documentation/driver-api/usb/usb.rst
@@ -420,6 +420,12 @@  USBDEVFS_CONNECTINFO
     know the devnum value already, it's the DDD value of the device file
     name.
 
+USBDEVFS_GET_SPEED
+    Returns the speed of the device. The speed is returned as a
+    nummerical value in accordance with enum usb_device_speed
+
+    File modification time is not updated by this request.
+
 USBDEVFS_GETDRIVER
     Returns the name of the kernel driver bound to a given interface (a
     string). Parameter is a pointer to this structure, which is