linux_dsm_epyc7002/include
Alan Stern c01b244ad8 USB: add usbfs ioctl to retrieve the connection speed
The usbfs interface does not provide any way for the user to learn the
speed at which a device is connected.  The current API includes a
USBDEVFS_CONNECTINFO ioctl, but all it provides is the device's
address and a one-bit value indicating whether the connection is low
speed.  That may have sufficed in the era of USB-1.1, but it isn't
good enough today.

This patch introduces a new ioctl, USBDEVFS_GET_SPEED, which returns a
numeric value indicating the speed of the connection: unknown, low,
full, high, wireless, super, or super-plus.

Similar information (not exactly the same) is available through sysfs,
but it seems reasonable to provide the actual value in usbfs.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Reinhard Huck <reinhard.huck@thesycon.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-06-13 10:48:24 +02:00
..
acpi
asm-generic
clocksource
crypto
drm
dt-bindings
keys
kvm
linux Merge 4.12-rc5 into usb-next 2017-06-12 08:43:53 +02:00
math-emu
media
memory
misc
net
pcmcia
ras
rdma
rxrpc
scsi
soc
sound
target
trace
uapi USB: add usbfs ioctl to retrieve the connection speed 2017-06-13 10:48:24 +02:00
video
xen