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iwlagn: make iwlagn_wait_notification return error code

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We're unlikely to care about the actual time spent
waiting, so make the function return an error code
which is less error prone in coding new uses.

Also, while at it, mark __must_check.

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 03:14:48 -07:00 committed by Wey-Yi Guy
parent 09f18afe76
commit a8674a1efc
3 changed files with 10 additions and 11 deletions
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11
drivers/net/wireless/iwlwifi/iwl-agn-lib.c
View file

@ -2272,9 +2272,9 @@ void iwlagn_init_notification_wait(struct iwl_priv *priv,
spin_unlock_bh(&priv->_agn.notif_wait_lock);
}
signed long iwlagn_wait_notification(struct iwl_priv *priv,
struct iwl_notification_wait *wait_entry,
unsigned long timeout)
int iwlagn_wait_notification(struct iwl_priv *priv,
struct iwl_notification_wait *wait_entry,
unsigned long timeout)
{
int ret;
@ -2286,7 +2286,10 @@ signed long iwlagn_wait_notification(struct iwl_priv *priv,
list_del(&wait_entry->list);
spin_unlock_bh(&priv->_agn.notif_wait_lock);
return ret;
/* return value is always >= 0 */
if (ret <= 0)
return -ETIMEDOUT;
return 0;
}
void iwlagn_remove_notification(struct iwl_priv *priv,

8
drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
View file

@ -73,13 +73,9 @@ static int iwlagn_disable_pan(struct iwl_priv *priv,
IWL_ERR(priv, "Error disabling PAN (%d)\n", ret);
iwlagn_remove_notification(priv, &disable_wait);
} else {
signed long wait_res;
wait_res = iwlagn_wait_notification(priv, &disable_wait, HZ);
if (wait_res == 0) {
ret = iwlagn_wait_notification(priv, &disable_wait, HZ);
if (ret)
IWL_ERR(priv, "Timed out waiting for PAN disable\n");
ret = -EIO;
}
}
return ret;

2
drivers/net/wireless/iwlwifi/iwl-agn.h
View file

@ -343,7 +343,7 @@ iwlagn_init_notification_wait(struct iwl_priv *priv,
struct iwl_rx_packet *pkt,
void *data),
void *fn_data);
signed long __releases(wait_entry)
int __must_check __releases(wait_entry)
iwlagn_wait_notification(struct iwl_priv *priv,
struct iwl_notification_wait *wait_entry,
unsigned long timeout);