diff options
| author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2013-07-25 14:14:34 +0400 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2013-07-26 12:07:10 +0400 |
| commit | a53ee0a308b16e392e0219c585b10f329345766b (patch) | |
| tree | 139296ac36182bb54338e05081809d6ccb3fb28f /drivers | |
| parent | b6658ff80c43bcf84be0bbe371c88af1452e7776 (diff) | |
| download | linux-a53ee0a308b16e392e0219c585b10f329345766b.tar.xz | |
iwlwifi: pcie: clear RFKILL interrupt in AMPG
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-prph.h | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/pcie/rx.c | 8 |
2 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-prph.h b/drivers/net/wireless/iwlwifi/iwl-prph.h index ff8cc75c189d..a70c7b9d9bad 100644 --- a/drivers/net/wireless/iwlwifi/iwl-prph.h +++ b/drivers/net/wireless/iwlwifi/iwl-prph.h @@ -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 diff --git a/drivers/net/wireless/iwlwifi/pcie/rx.c b/drivers/net/wireless/iwlwifi/pcie/rx.c index fd848cd1583e..f600e68a410a 100644 --- a/drivers/net/wireless/iwlwifi/pcie/rx.c +++ b/drivers/net/wireless/iwlwifi/pcie/rx.c @@ -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)) |