xiaomi-sm8450/android_kernel_xiaomi_sm8450
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rfkill: rewrite

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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
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15
drivers/net/wireless/ath/ath9k/pci.c
View File

@@ -227,11 +227,6 @@ static int ath_pci_suspend(struct pci_dev *pdev, pm_message_t state)
ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
#endif
pci_save_state(pdev);
pci_disable_device(pdev);
pci_set_power_state(pdev, PCI_D3hot);
@@ -256,16 +251,6 @@ static int ath_pci_resume(struct pci_dev *pdev)
AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
/*
* check the h/w rfkill state on resume
* and start the rfkill poll timer
*/
if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
queue_delayed_work(sc->hw->workqueue,
&sc->rf_kill.rfkill_poll, 0);
#endif
return 0;
}