diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn-lib.c | 21 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-core.c | 4 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-core.h | 1 |
3 files changed, 20 insertions, 6 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c index e202a40cbcb7..75e1035330be 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c @@ -2363,12 +2363,21 @@ void iwlagn_stop_device(struct iwl_priv *priv) /* device going down, Stop using ICT table */ iwl_disable_ict(priv); - iwlagn_txq_ctx_stop(priv); - iwlagn_rxq_stop(priv); - - /* Power-down device's busmaster DMA clocks */ - iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT); - udelay(5); + /* + * If a HW restart happens during firmware loading, + * then the firmware loading might call this function + * and later it might be called again due to the + * restart. So don't process again if the device is + * already dead. + */ + if (test_bit(STATUS_DEVICE_ENABLED, &priv->status)) { + iwlagn_txq_ctx_stop(priv); + iwlagn_rxq_stop(priv); + + /* Power-down device's busmaster DMA clocks */ + iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT); + udelay(5); + } /* Make sure (redundant) we've released our request to stay awake */ iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c index af72fd51ea74..66da1dec982c 100644 --- a/drivers/net/wireless/iwlwifi/iwl-core.c +++ b/drivers/net/wireless/iwlwifi/iwl-core.c @@ -995,6 +995,8 @@ void iwl_apm_stop(struct iwl_priv *priv) { IWL_DEBUG_INFO(priv, "Stop card, put in low power state\n"); + clear_bit(STATUS_DEVICE_ENABLED, &priv->status); + /* Stop device's DMA activity */ iwl_apm_stop_master(priv); @@ -1109,6 +1111,8 @@ int iwl_apm_init(struct iwl_priv *priv) iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG, APMG_PCIDEV_STT_VAL_L1_ACT_DIS); + set_bit(STATUS_DEVICE_ENABLED, &priv->status); + out: return ret; } diff --git a/drivers/net/wireless/iwlwifi/iwl-core.h b/drivers/net/wireless/iwlwifi/iwl-core.h index 32a990ff09ae..6226e3d9f101 100644 --- a/drivers/net/wireless/iwlwifi/iwl-core.h +++ b/drivers/net/wireless/iwlwifi/iwl-core.h @@ -592,6 +592,7 @@ void iwlcore_free_geos(struct iwl_priv *priv); #define STATUS_SCAN_HW 15 #define STATUS_POWER_PMI 16 #define STATUS_FW_ERROR 17 +#define STATUS_DEVICE_ENABLED 18 static inline int iwl_is_ready(struct iwl_priv *priv) |