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iwlwifi: reintroduce iwl_enable_rfkill_int

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If device is disabled by rfkill switch, do not enable all interrupts,
but only CSR_INT_BIT_RF_KILL to receive rfkill state change. Unblocking
other interrupts might cause problems, since driver can not be prepared
for receive them.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Stanislaw Gruszka 2012-03-07 09:52:28 -08:00 committed by John W. Linville
parent c2945f390d
commit 8722c899a0
3 changed files with 16 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/wireless/iwlwifi/iwl-trans-pcie-int.h
View File

@ -376,6 +376,12 @@ static inline void iwl_enable_interrupts(struct iwl_trans *trans)
iwl_write32(trans, CSR_INT_MASK, trans_pcie->inta_mask);
}
static inline void iwl_enable_rfkill_int(struct iwl_trans *trans)
{
IWL_DEBUG_ISR(trans, "Enabling rfkill interrupt\n");
iwl_write32(trans, CSR_INT_MASK, CSR_INT_BIT_RF_KILL);
}
/*
* we have 8 bits used like this:
*

6
drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c
View File

@ -1134,10 +1134,8 @@ void iwl_irq_tasklet(struct iwl_trans *trans)
if (test_bit(STATUS_INT_ENABLED, &trans->shrd->status))
iwl_enable_interrupts(trans);
/* Re-enable RF_KILL if it occurred */
else if (handled & CSR_INT_BIT_RF_KILL) {
IWL_DEBUG_ISR(trans, "Enabling rfkill interrupt\n");
iwl_write32(trans, CSR_INT_MASK, CSR_INT_BIT_RF_KILL);
}
else if (handled & CSR_INT_BIT_RF_KILL)
iwl_enable_rfkill_int(trans);
}
/******************************************************************************

13
drivers/net/wireless/iwlwifi/iwl-trans-pcie.c
View File

@ -1044,7 +1044,7 @@ static int iwl_trans_pcie_start_fw(struct iwl_trans *trans,
iwl_op_mode_hw_rf_kill(trans->op_mode, hw_rfkill);
if (hw_rfkill) {
iwl_enable_interrupts(trans);
iwl_enable_rfkill_int(trans);
return -ERFKILL;
}
@ -1553,8 +1553,7 @@ static void iwl_trans_pcie_stop_hw(struct iwl_trans *trans)
iwl_write32(trans, CSR_INT, 0xFFFFFFFF);
/* Even if we stop the HW, we still want the RF kill interrupt */
IWL_DEBUG_ISR(trans, "Enabling rfkill interrupt\n");
iwl_write32(trans, CSR_INT_MASK, CSR_INT_BIT_RF_KILL);
iwl_enable_rfkill_int(trans);
}
static int iwl_trans_pcie_reclaim(struct iwl_trans *trans, int sta_id, int tid,
@ -1647,10 +1646,14 @@ static int iwl_trans_pcie_resume(struct iwl_trans *trans)
{
bool hw_rfkill;
iwl_enable_interrupts(trans);
hw_rfkill = !(iwl_read32(trans, CSR_GP_CNTRL) &
CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW);
if (hw_rfkill)
iwl_enable_rfkill_int(trans);
else
iwl_enable_interrupts(trans);
iwl_op_mode_hw_rf_kill(trans->op_mode, hw_rfkill);
return 0;