diff options
| author | Johannes Berg <johannes@sipsolutions.net> | 2009-03-27 14:14:31 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-04-22 16:54:27 -0400 |
| commit | 621cac85297de5ba655e3430b007dd2e0da91da6 (patch) | |
| tree | 6193ecf0966094bb744fb4238191bcab03a3cdef /Documentation | |
| parent | c1c6b14b22af0f85d05a70405dc3fba5de840c7b (diff) | |
| download | lwn-621cac85297de5ba655e3430b007dd2e0da91da6.tar.gz lwn-621cac85297de5ba655e3430b007dd2e0da91da6.zip | |
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')
| -rw-r--r-- | Documentation/rfkill.txt | 16 |
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. |