diff options
| -rw-r--r-- | drivers/net/wireless/iwlwifi/pcie/trans.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c index d9ccb4edc602..bc584efcebab 100644 --- a/drivers/net/wireless/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/iwlwifi/pcie/trans.c @@ -607,7 +607,9 @@ static void iwl_trans_pcie_fw_alive(struct iwl_trans *trans, u32 scd_addr) static void iwl_trans_pcie_stop_device(struct iwl_trans *trans) { struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); - bool hw_rfkill; + bool hw_rfkill, was_hw_rfkill; + + was_hw_rfkill = iwl_is_rfkill_set(trans); /* tell the device to stop sending interrupts */ spin_lock(&trans_pcie->irq_lock); @@ -669,13 +671,20 @@ static void iwl_trans_pcie_stop_device(struct iwl_trans *trans) * all the interrupts were disabled, in this case we couldn't * receive the RF kill interrupt and update the state in the * op_mode. + * Don't call the op_mode if the rkfill state hasn't changed. + * This allows the op_mode to call stop_device from the rfkill + * notification without endless recursion. Under very rare + * circumstances, we might have a small recursion if the rfkill + * state changed exactly now while we were called from stop_device. + * This is very unlikely but can happen and is supported. */ hw_rfkill = iwl_is_rfkill_set(trans); if (hw_rfkill) set_bit(STATUS_RFKILL, &trans->status); else clear_bit(STATUS_RFKILL, &trans->status); - iwl_op_mode_hw_rf_kill(trans->op_mode, hw_rfkill); + if (hw_rfkill != was_hw_rfkill) + iwl_op_mode_hw_rf_kill(trans->op_mode, hw_rfkill); } static void iwl_trans_pcie_d3_suspend(struct iwl_trans *trans, bool test) |