xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

rfkill: rewrite

Browse Source 
This patch completely rewrites the rfkill core to address
the following deficiencies:

 * all rfkill drivers need to implement polling where necessary
   rather than having one central implementation

 * updating the rfkill state cannot be done from arbitrary
   contexts, forcing drivers to use schedule_work and requiring
   lots of code

 * rfkill drivers need to keep track of soft/hard blocked
   internally -- the core should do this

 * the rfkill API has many unexpected quirks, for example being
   asymmetric wrt. alloc/free and register/unregister

 * rfkill can call back into a driver from within a function the
   driver called -- this is prone to deadlocks and generally
   should be avoided

 * rfkill-input pointlessly is a separate module

 * drivers need to #ifdef rfkill functions (unless they want to
   depend on or select RFKILL) -- rfkill should provide inlines
   that do nothing if it isn't compiled in

 * the rfkill structure is not opaque -- drivers need to initialise
   it correctly (lots of sanity checking code required) -- instead
   force drivers to pass the right variables to rfkill_alloc()

 * the documentation is hard to read because it always assumes the
   reader is completely clueless and contains way TOO MANY CAPS

 * the rfkill code needlessly uses a lot of locks and atomic
   operations in locked sections

 * fix LED trigger to actually change the LED when the radio state
   changes -- this wasn't done before

Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> [thinkpad]
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
2009-06-02 13:01:37 +02:00
committed by John W. Linville
parent 0f6399c4c5
commit 19d337dff9
46 changed files with 2567 additions and 3304 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
net/rfkill/Kconfig
View File

@@ -10,22 +10,15 @@ menuconfig RFKILL
To compile this driver as a module, choose M here: the
module will be called rfkill.
config RFKILL_INPUT
tristate "Input layer to RF switch connector"
depends on RFKILL && INPUT
help
Say Y here if you want kernel automatically toggle state
of RF switches on and off when user presses appropriate
button or a key on the keyboard. Without this module you
need a some kind of userspace application to control
state of the switches.
To compile this driver as a module, choose M here: the
module will be called rfkill-input.
# LED trigger support
config RFKILL_LEDS
bool
depends on RFKILL && LEDS_TRIGGERS
depends on RFKILL
depends on LEDS_TRIGGERS = y || RFKILL = LEDS_TRIGGERS
default y
config RFKILL_INPUT
bool
depends on RFKILL
depends on INPUT = y || RFKILL = INPUT
default y