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iwlwifi: pcie: clear RFKILL interrupt in AMPG

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If we forget to do so, we can't send HCMD to firmware while
the NIC is in RFKILL state.

Cc: stable@vger.kernel.org
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Emmanuel Grumbach 2013-07-25 13:14:34 +03:00 committed by Johannes Berg
parent b6658ff80c
commit a53ee0a308
2 changed files with 10 additions and 0 deletions
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2
drivers/net/wireless/iwlwifi/iwl-prph.h
View File

@ -97,6 +97,8 @@
#define APMG_PCIDEV_STT_VAL_L1_ACT_DIS (0x00000800)
#define APMG_RTC_INT_STT_RFKILL (0x10000000)
/* Device system time */
#define DEVICE_SYSTEM_TIME_REG 0xA0206C

8
drivers/net/wireless/iwlwifi/pcie/rx.c
View File

@ -888,6 +888,14 @@ irqreturn_t iwl_pcie_irq_handler(int irq, void *dev_id)
iwl_op_mode_hw_rf_kill(trans->op_mode, hw_rfkill);
if (hw_rfkill) {
/*
* Clear the interrupt in APMG if the NIC is going down.
* Note that when the NIC exits RFkill (else branch), we
* can't access prph and the NIC will be reset in
* start_hw anyway.
*/
iwl_write_prph(trans, APMG_RTC_INT_STT_REG,
APMG_RTC_INT_STT_RFKILL);
set_bit(STATUS_RFKILL, &trans_pcie->status);
if (test_and_clear_bit(STATUS_HCMD_ACTIVE,
&trans_pcie->status))