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HID: usbhid: extend the polling interval configuration to keyboards

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For mouse and joystick devices user can change the polling interval
via usbhid.mousepoll and usbhid.jspoll.
Implement the same thing for keyboards, so user can
reduce(or increase) input latency this way.

This has been tested with a Cooler Master Devastator with
kbpoll=32, resulting in delay between events of 32 ms(values were taken
from evtest).

Signed-off-by: Filip Alac <filipalac@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Filip Alac 2018-03-21 17:28:25 +01:00 • committed by Jiri Kosina
commit 2ddc8e2d2b
2 changed files with 14 additions and 1 deletions
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3
Documentation/admin-guide/kernel-parameters.txt
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@ -4352,6 +4352,9 @@
usbhid.jspoll=
[USBHID] The interval which joysticks are to be polled at.
usbhid.kbpoll=
[USBHID] The interval which keyboards are to be polled at.
usb-storage.delay_use=
[UMS] The delay in seconds before a new device is
scanned for Logical Units (default 1).