From: Stanislaw Gruszka <sgruszka@xxxxxxxxxx>
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@xxxxxxxxxx>
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@xxxxxxxxx>
---
drivers/net/wireless/iwlwifi/iwl-trans-pcie-int.h | 6 ++++++
drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c | 6 ++----
drivers/net/wireless/iwlwifi/iwl-trans-pcie.c | 13 ++++++++-----
3 files changed, 16 insertions(+), 9 deletions(-)
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans-pcie-int.h b/drivers/net/wireless/iwlwifi/iwl-trans-pcie-int.h
index 4f73a6d..93d89a3 100644
--- a/drivers/net/wireless/iwlwifi/iwl-trans-pcie-int.h
+++ b/drivers/net/wireless/iwlwifi/iwl-trans-pcie-int.h
@@ -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:
*
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c b/drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c
index 5b2e47a..3eb7bd1 100644
--- a/drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c
@@ -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);
}
/******************************************************************************
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans-pcie.c b/drivers/net/wireless/iwlwifi/iwl-trans-pcie.c
index 75bb95e..1d35d0e 100644
--- a/drivers/net/wireless/iwlwifi/iwl-trans-pcie.c
+++ b/drivers/net/wireless/iwlwifi/iwl-trans-pcie.c
@@ -1051,7 +1051,7 @@ 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;
}
@@ -1562,8 +1562,7 @@ 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,
@@ -1656,10 +1655,14 @@ 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;
--
1.7.0.4
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