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rfkill: document /dev/rfkill

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Add some blurb about /dev/rfkill to the documentation and
fix the "transmiter" spelling error.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2009-06-03 10:17:59 +02:00 committed by John W. Linville
parent 2ec2c68c11
commit f71fea23a2
1 changed files with 7 additions and 1 deletions
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8
Documentation/rfkill.txt
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@ -113,7 +113,7 @@ The following sysfs entries exist for every rfkill device:
0: RFKILL_STATE_SOFT_BLOCKED
transmitter is turned off by software
1: RFKILL_STATE_UNBLOCKED
transmiter is (potentially) active
transmitter is (potentially) active
2: RFKILL_STATE_HARD_BLOCKED
transmitter is forced off by something outside of
the driver's control.
@ -128,3 +128,9 @@ RFKILL_TYPE
The contents of these variables corresponds to the "name", "state" and
"type" sysfs files explained above.
An alternative userspace interface exists as a misc device /dev/rfkill,
which allows userspace to obtain and set the state of rfkill devices and
sets of devices. It also notifies userspace about device addition and
removal. The API is a simple read/write API that is defined in
linux/rfkill.h.