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authorJohannes Berg <johannes@sipsolutions.net>2009-03-27 14:14:31 +0100
committerJohn W. Linville <linville@tuxdriver.com>2009-04-22 16:54:27 -0400
commit621cac85297de5ba655e3430b007dd2e0da91da6 (patch)
tree6193ecf0966094bb744fb4238191bcab03a3cdef /Documentation/rfkill.txt
parentc1c6b14b22af0f85d05a70405dc3fba5de840c7b (diff)
downloadlinux-linaro-stable-621cac85297de5ba655e3430b007dd2e0da91da6.tar.gz
rfkill: remove user_claim stuff
Almost all drivers do not support user_claim, so remove it completely and always report -EOPNOTSUPP to userspace. Since userspace cannot really drive rfkill _anyway_ (due to the odd restrictions imposed by the documentation) having this code is just pointless. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'Documentation/rfkill.txt')
-rw-r--r--Documentation/rfkill.txt16
1 files changed, 6 insertions, 10 deletions
diff --git a/Documentation/rfkill.txt b/Documentation/rfkill.txt
index 4d3ee317a4a3..40c3a3f10816 100644
--- a/Documentation/rfkill.txt
+++ b/Documentation/rfkill.txt
@@ -521,16 +521,12 @@ status of the system.
Input devices may issue events that are related to rfkill. These are the
various KEY_* events and SW_* events supported by rfkill-input.c.
-******IMPORTANT******
-When rfkill-input is ACTIVE, userspace is NOT TO CHANGE THE STATE OF AN RFKILL
-SWITCH IN RESPONSE TO AN INPUT EVENT also handled by rfkill-input, unless it
-has set to true the user_claim attribute for that particular switch. This rule
-is *absolute*; do NOT violate it.
-******IMPORTANT******
-
-Userspace must not assume it is the only source of control for rfkill switches.
-Their state CAN and WILL change due to firmware actions, direct user actions,
-and the rfkill-input EPO override for *_RFKILL_ALL.
+Userspace may not change the state of an rfkill switch in response to an
+input event, it should refrain from changing states entirely.
+
+Userspace cannot assume it is the only source of control for rfkill switches.
+Their state can change due to firmware actions, direct user actions, and the
+rfkill-input EPO override for *_RFKILL_ALL.
When rfkill-input is not active, userspace must initiate a rfkill status
change by writing to the "state" attribute in order for anything to happen.