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iwlagn: remove hw_ready variable 

This variable is only ever checked right after
the function that sets it, but the same function
will also return the status, so we can pass it
through instead of checking hw_ready later.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
This commit is contained in:
Johannes Berg 2011-04-13 03:14:52 -07:00 committed by Wey-Yi Guy
parent dbf28e21ca
commit 4cd2bf76a4
3 changed files with 15 additions and 18 deletions
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3
drivers/net/wireless/iwlwifi/iwl-agn-lib.c
View File

@ -2306,8 +2306,7 @@ int iwlagn_start_device(struct iwl_priv *priv)
{
int ret;
iwl_prepare_card_hw(priv);
if (!priv->hw_ready) {
if (iwl_prepare_card_hw(priv)) {
IWL_WARN(priv, "Exit HW not ready\n");
return -EIO;
}

29
drivers/net/wireless/iwlwifi/iwl-agn.c
View File

@ -2367,9 +2367,10 @@ static void iwl_down(struct iwl_priv *priv)
#define HW_READY_TIMEOUT (50)
/* Note: returns poll_bit return value, which is >= 0 if success */
static int iwl_set_hw_ready(struct iwl_priv *priv)
{
int ret = 0;
int ret;
iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
CSR_HW_IF_CONFIG_REG_BIT_NIC_READY);
@ -2379,25 +2380,21 @@ static int iwl_set_hw_ready(struct iwl_priv *priv)
CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
HW_READY_TIMEOUT);
if (ret != -ETIMEDOUT)
priv->hw_ready = true;
else
priv->hw_ready = false;
IWL_DEBUG_INFO(priv, "hardware %s\n",
(priv->hw_ready == 1) ? "ready" : "not ready");
IWL_DEBUG_INFO(priv, "hardware%s ready\n", ret < 0 ? " not" : "");
return ret;
}
/* Note: returns standard 0/-ERROR code */
int iwl_prepare_card_hw(struct iwl_priv *priv)
{
int ret = 0;
int ret;
IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter\n");
ret = iwl_set_hw_ready(priv);
if (priv->hw_ready)
return ret;
if (ret >= 0)
return 0;
/* If HW is not ready, prepare the conditions to check again */
iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
@ -2407,10 +2404,13 @@ int iwl_prepare_card_hw(struct iwl_priv *priv)
~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE,
CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000);
/* HW should be ready by now, check again. */
if (ret != -ETIMEDOUT)
iwl_set_hw_ready(priv);
if (ret < 0)
return ret;
/* HW should be ready by now, check again. */
ret = iwl_set_hw_ready(priv);
if (ret >= 0)
return 0;
return ret;
}
@ -3741,8 +3741,7 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
* PCI Tx retries from interfering with C3 CPU state */
pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
iwl_prepare_card_hw(priv);
if (!priv->hw_ready) {
if (iwl_prepare_card_hw(priv)) {
IWL_WARN(priv, "Failed, HW not ready\n");
goto out_iounmap;
}

1
drivers/net/wireless/iwlwifi/iwl-dev.h
View File

@ -1503,7 +1503,6 @@ struct iwl_priv {
struct timer_list statistics_periodic;
struct timer_list ucode_trace;
struct timer_list watchdog;
bool hw_ready;
struct iwl_event_log event_log;