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iwlwifi: refactor pci prob flow

Browse Source 
This patch refactores pci prob flow. It moves mac80211 registration
to the end, otherwise there is a race between error path in pci_probe
and mac_start.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Tomas Winkler 2008-05-15 13:54:17 +08:00 committed by John W. Linville
parent 445c2dff40
commit 6ba8795622
4 changed files with 55 additions and 46 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

63
drivers/net/wireless/iwlwifi/iwl-core.c
View File

@ -518,12 +518,6 @@ static int iwlcore_init_geos(struct iwl_priv *priv)
priv->bands[IEEE80211_BAND_2GHZ].n_channels,
priv->bands[IEEE80211_BAND_5GHZ].n_channels);
if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
&priv->bands[IEEE80211_BAND_2GHZ];
if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
&priv->bands[IEEE80211_BAND_5GHZ];
set_bit(STATUS_GEO_CONFIGURED, &priv->status);
@ -533,13 +527,12 @@ static int iwlcore_init_geos(struct iwl_priv *priv)
/*
* iwlcore_free_geos - undo allocations in iwlcore_init_geos
*/
void iwlcore_free_geos(struct iwl_priv *priv)
static void iwlcore_free_geos(struct iwl_priv *priv)
{
kfree(priv->ieee_channels);
kfree(priv->ieee_rates);
clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
}
EXPORT_SYMBOL(iwlcore_free_geos);
#ifdef CONFIG_IWL4965_HT
static u8 is_single_rx_stream(struct iwl_priv *priv)
@ -767,8 +760,9 @@ int iwl_set_rxon_channel(struct iwl_priv *priv,
}
EXPORT_SYMBOL(iwl_set_rxon_channel);
static void iwlcore_init_hw(struct iwl_priv *priv)
int iwl_setup_mac(struct iwl_priv *priv)
{
int ret;
struct ieee80211_hw *hw = priv->hw;
hw->rate_control_algorithm = "iwl-4965-rs";
@ -782,9 +776,29 @@ static void iwlcore_init_hw(struct iwl_priv *priv)
/* Enhanced value; more queues, to support 11n aggregation */
hw->ampdu_queues = 12;
#endif /* CONFIG_IWL4965_HT */
}
static int iwlcore_init_drv(struct iwl_priv *priv)
hw->conf.beacon_int = 100;
if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
&priv->bands[IEEE80211_BAND_2GHZ];
if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
&priv->bands[IEEE80211_BAND_5GHZ];
ret = ieee80211_register_hw(priv->hw);
if (ret) {
IWL_ERROR("Failed to register hw (error %d)\n", ret);
return ret;
}
priv->mac80211_registered = 1;
return 0;
}
EXPORT_SYMBOL(iwl_setup_mac);
int iwl_init_drv(struct iwl_priv *priv)
{
int ret;
int i;
@ -821,6 +835,9 @@ static int iwlcore_init_drv(struct iwl_priv *priv)
/* Choose which receivers/antennas to use */
iwl_set_rxon_chain(priv);
if (priv->cfg->mod_params->enable_qos)
priv->qos_data.qos_enable = 1;
iwl_reset_qos(priv);
priv->qos_data.qos_active = 0;
@ -845,34 +862,22 @@ static int iwlcore_init_drv(struct iwl_priv *priv)
goto err_free_channel_map;
}
ret = ieee80211_register_hw(priv->hw);
if (ret) {
IWL_ERROR("Failed to register network device (error %d)\n",
ret);
goto err_free_geos;
}
priv->hw->conf.beacon_int = 100;
priv->mac80211_registered = 1;
return 0;
err_free_geos:
iwlcore_free_geos(priv);
err_free_channel_map:
iwl_free_channel_map(priv);
err:
return ret;
}
EXPORT_SYMBOL(iwl_init_drv);
int iwl_setup(struct iwl_priv *priv)
void iwl_uninit_drv(struct iwl_priv *priv)
{
int ret = 0;
iwlcore_init_hw(priv);
ret = iwlcore_init_drv(priv);
return ret;
iwlcore_free_geos(priv);
iwl_free_channel_map(priv);
}
EXPORT_SYMBOL(iwl_setup);
EXPORT_SYMBOL(iwl_uninit_drv);
/* Low level driver call this function to update iwlcore with
* driver status.

6
drivers/net/wireless/iwlwifi/iwl-core.h
View File

@ -175,13 +175,13 @@ void iwl_set_rxon_chain(struct iwl_priv *priv);
int iwl_set_rxon_channel(struct iwl_priv *priv,
enum ieee80211_band band,
u16 channel);
void iwlcore_free_geos(struct iwl_priv *priv);
int iwl_setup(struct iwl_priv *priv);
void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info);
u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
struct ieee80211_ht_info *sta_ht_inf);
int iwl_hw_nic_init(struct iwl_priv *priv);
int iwl_setup_mac(struct iwl_priv *priv);
int iwl_init_drv(struct iwl_priv *priv);
void iwl_uninit_drv(struct iwl_priv *priv);
/* "keep warm" functions */
int iwl_kw_init(struct iwl_priv *priv);
int iwl_kw_alloc(struct iwl_priv *priv);

1
drivers/net/wireless/iwlwifi/iwl-eeprom.c
View File

@ -567,7 +567,6 @@ void iwl_free_channel_map(struct iwl_priv *priv)
kfree(priv->channel_info);
priv->channel_count = 0;
}
EXPORT_SYMBOL(iwl_free_channel_map);
/**
* iwl_get_channel_info - Find driver's private channel info

31
drivers/net/wireless/iwlwifi/iwl4965-base.c
View File

@ -5878,10 +5878,10 @@ static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e
}
/*******************
* 6. Setup hw/priv
* 6. Setup priv
*******************/
err = iwl_setup(priv);
err = iwl_init_drv(priv);
if (err)
goto out_free_eeprom;
/* At this point both hw and priv are initialized. */
@ -5896,9 +5896,6 @@ static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e
IWL_DEBUG_INFO("Radio disabled.\n");
}
if (priv->cfg->mod_params->enable_qos)
priv->qos_data.qos_enable = 1;
/********************
* 8. Setup services
********************/
@ -5909,14 +5906,9 @@ static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e
err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
if (err) {
IWL_ERROR("failed to create sysfs device attributes\n");
goto out_free_eeprom;
goto out_uninit_drv;
}
err = iwl_dbgfs_register(priv, DRV_NAME);
if (err) {
IWL_ERROR("failed to create debugfs files\n");
goto out_remove_sysfs;
}
iwl4965_setup_deferred_work(priv);
iwl4965_setup_rx_handlers(priv);
@ -5927,12 +5919,26 @@ static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e
pci_save_state(pdev);
pci_disable_device(pdev);
/**********************************
* 10. Setup and register mac80211
**********************************/
err = iwl_setup_mac(priv);
if (err)
goto out_remove_sysfs;
err = iwl_dbgfs_register(priv, DRV_NAME);
if (err)
IWL_ERROR("failed to create debugfs files\n");
/* notify iwlcore to init */
iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
return 0;
out_remove_sysfs:
sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
out_uninit_drv:
iwl_uninit_drv(priv);
out_free_eeprom:
iwl_eeprom_free(priv);
out_iounmap:
@ -6014,8 +6020,7 @@ static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
pci_disable_device(pdev);
pci_set_drvdata(pdev, NULL);
iwl_free_channel_map(priv);
iwlcore_free_geos(priv);
iwl_uninit_drv(priv);
if (priv->ibss_beacon)
dev_kfree_skb(priv->ibss_beacon);