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iwlwifi: fix rfkill memory error

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Do not free reference to device twice. After rfkill registration succeeds
we only need to call rfkill_unregister() and not rfkill_free().
Also add some debugging.

Signed-off-by: Mohamed Abbas <mabbas@linux.intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Mohamed Abbas 2008-04-03 16:05:24 -07:00 committed by John W. Linville
parent fe00b5a5b7
commit 03d29c6849
3 changed files with 22 additions and 18 deletions
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7
drivers/net/wireless/iwlwifi/iwl-core.c
View file

@ -256,9 +256,13 @@ EXPORT_SYMBOL(iwl_setup);
int iwlcore_low_level_notify(struct iwl_priv *priv,
enum iwlcore_card_notify notify)
{
int ret;
switch (notify) {
case IWLCORE_INIT_EVT:
iwl_rfkill_init(priv);
ret = iwl_rfkill_init(priv);
if (ret)
IWL_ERROR("Unable to initialize RFKILL system. "
"Ignoring error: %d\n", ret);
break;
case IWLCORE_START_EVT:
break;
@ -266,7 +270,6 @@ int iwlcore_low_level_notify(struct iwl_priv *priv,
break;
case IWLCORE_REMOVE_EVT:
iwl_rfkill_unregister(priv);
iwl_rfkill_free(priv);
break;
}

31
drivers/net/wireless/iwlwifi/iwl-rfkill.c
View file

@ -75,8 +75,10 @@ int iwl_rfkill_init(struct iwl_priv *priv)
BUG_ON(device == NULL);
IWL_DEBUG_RF_KILL("Initializing RFKILL.\n");
priv->rfkill_mngr.rfkill = rfkill_allocate(device, RFKILL_TYPE_WLAN);
if (!priv->rfkill_mngr.rfkill) {
IWL_ERROR("Unable to allocate rfkill device.\n");
ret = -ENOMEM;
goto error;
}
@ -92,6 +94,7 @@ int iwl_rfkill_init(struct iwl_priv *priv)
priv->rfkill_mngr.input_dev = input_allocate_device();
if (!priv->rfkill_mngr.input_dev) {
IWL_ERROR("Unable to allocate rfkill input device.\n");
ret = -ENOMEM;
goto freed_rfkill;
}
@ -105,27 +108,35 @@ int iwl_rfkill_init(struct iwl_priv *priv)
set_bit(KEY_WLAN, priv->rfkill_mngr.input_dev->keybit);
ret = rfkill_register(priv->rfkill_mngr.rfkill);
if (ret)
if (ret) {
IWL_ERROR("Unable to register rfkill: %d\n", ret);
goto free_input_dev;
}
ret = input_register_device(priv->rfkill_mngr.input_dev);
if (ret)
if (ret) {
IWL_ERROR("Unable to register rfkill input device: %d\n", ret);
goto unregister_rfkill;
}
IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
return ret;
unregister_rfkill:
rfkill_unregister(priv->rfkill_mngr.rfkill);
priv->rfkill_mngr.rfkill = NULL;
free_input_dev:
input_free_device(priv->rfkill_mngr.input_dev);
priv->rfkill_mngr.input_dev = NULL;
freed_rfkill:
rfkill_free(priv->rfkill_mngr.rfkill);
if (priv->rfkill_mngr.rfkill != NULL)
rfkill_free(priv->rfkill_mngr.rfkill);
priv->rfkill_mngr.rfkill = NULL;
error:
IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
return ret;
}
EXPORT_SYMBOL(iwl_rfkill_init);
@ -138,20 +149,12 @@ void iwl_rfkill_unregister(struct iwl_priv *priv)
if (priv->rfkill_mngr.rfkill)
rfkill_unregister(priv->rfkill_mngr.rfkill);
priv->rfkill_mngr.input_dev = NULL;
priv->rfkill_mngr.rfkill = NULL;
}
EXPORT_SYMBOL(iwl_rfkill_unregister);
void iwl_rfkill_free(struct iwl_priv *priv)
{
if (priv->rfkill_mngr.input_dev)
input_free_device(priv->rfkill_mngr.input_dev);
if (priv->rfkill_mngr.rfkill)
rfkill_free(priv->rfkill_mngr.rfkill);
}
EXPORT_SYMBOL(iwl_rfkill_free);
/* set rf-kill to the right state. */
void iwl_rfkill_set_hw_state(struct iwl_priv *priv)
{

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

@ -41,12 +41,10 @@ struct iwl_rfkill_mngr {
};
void iwl_rfkill_set_hw_state(struct iwl_priv *priv);
void iwl_rfkill_free(struct iwl_priv *priv);
void iwl_rfkill_unregister(struct iwl_priv *priv);
int iwl_rfkill_init(struct iwl_priv *priv);
#else
static inline void iwl_rfkill_set_hw_state(struct iwl_priv *priv) {}
static inline void iwl_rfkill_free(struct iwl_priv *priv) {}
static inline void iwl_rfkill_unregister(struct iwl_priv *priv) {}
static inline int iwl_rfkill_init(struct iwl_priv *priv) { return 0; }
#endif