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authorEmmanuel Grumbach <emmanuel.grumbach@intel.com>2011-07-20 17:51:22 -0700
committerWey-Yi Guy <wey-yi.w.guy@intel.com>2011-07-21 07:41:07 -0700
commit1e89cbac16dd91f1ddbf53c68fecb85d42793841 (patch)
treec183e9b924e90f01f858f0abc7b65c91f1a07297 /drivers/net/wireless
parentd62b39e105e427510f8996c03db9ce1bf83fcad8 (diff)
iwlagn: probe would crash with DEBUG_SHIRQ
This is since my patch: iwlagn: introduce transport layer and implement rx_init The IRQ is requested before the locks are initialized, hence the crash. Initialize the tasklet before we request the IRQ on the way. Reported-by: Johannes Berg <johannes.berg@intel.com> Tested-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Diffstat (limited to 'drivers/net/wireless')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-agn.c16
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-trans.c6
2 files changed, 11 insertions, 11 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index 299acb491f0d..4b666b7dfe60 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -3645,10 +3645,6 @@ int iwl_probe(struct iwl_bus *bus, struct iwl_cfg *cfg)
priv->cfg = cfg;
priv->inta_mask = CSR_INI_SET_MASK;
- err = iwl_trans_register(&priv->trans, priv);
- if (err)
- goto out_free_priv;
-
/* is antenna coupling more than 35dB ? */
priv->bt_ant_couple_ok =
(iwlagn_ant_coupling > IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
@@ -3682,10 +3678,14 @@ int iwl_probe(struct iwl_bus *bus, struct iwl_cfg *cfg)
IWL_INFO(priv, "Detected %s, REV=0x%X\n",
priv->cfg->name, hw_rev);
+ err = iwl_trans_register(&priv->trans, priv);
+ if (err)
+ goto out_free_traffic_mem;
+
if (trans_prepare_card_hw(&priv->trans)) {
err = -EIO;
IWL_WARN(priv, "Failed, HW not ready\n");
- goto out_free_traffic_mem;
+ goto out_free_trans;
}
/*****************
@@ -3695,7 +3695,7 @@ int iwl_probe(struct iwl_bus *bus, struct iwl_cfg *cfg)
err = iwl_eeprom_init(priv, hw_rev);
if (err) {
IWL_ERR(priv, "Unable to init EEPROM\n");
- goto out_free_traffic_mem;
+ goto out_free_trans;
}
err = iwl_eeprom_check_version(priv);
if (err)
@@ -3778,10 +3778,10 @@ out_destroy_workqueue:
iwl_uninit_drv(priv);
out_free_eeprom:
iwl_eeprom_free(priv);
+out_free_trans:
+ trans_free(&priv->trans);
out_free_traffic_mem:
iwl_free_traffic_mem(priv);
- trans_free(&priv->trans);
-out_free_priv:
ieee80211_free_hw(priv->hw);
out:
return err;
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.c b/drivers/net/wireless/iwlwifi/iwl-trans.c
index 582ab1b8e734..41f0de914008 100644
--- a/drivers/net/wireless/iwlwifi/iwl-trans.c
+++ b/drivers/net/wireless/iwlwifi/iwl-trans.c
@@ -1153,6 +1153,9 @@ int iwl_trans_register(struct iwl_trans *trans, struct iwl_priv *priv)
priv->trans.ops = &trans_ops;
priv->trans.priv = priv;
+ tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
+ iwl_irq_tasklet, (unsigned long)priv);
+
iwl_alloc_isr_ict(priv);
err = request_irq(priv->bus->irq, iwl_isr_ict, IRQF_SHARED,
@@ -1163,9 +1166,6 @@ int iwl_trans_register(struct iwl_trans *trans, struct iwl_priv *priv)
return err;
}
- tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
- iwl_irq_tasklet, (unsigned long)priv);
-
INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
return 0;