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orinoco: do not resgister NULL pm_notifier function

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With DEBUG_NOTIFIERS it results in

[11330.890966] WARNING: at /home/bor/src/linux-git/kernel/notifier.c:88
notifier_call_chain+0x91/0xa0()
[11330.890977] Hardware name: PORTEGE 4000
[11330.890983] Invalid notifier called! ...

Without DEBUG_NOTIFIERS it most likely crashes on NULL pointer.

Signed-off-by: Andrey Borzenkov <arvidjaar@mail.ru>
Acked-by: David Kilroy <kilroyd@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Andrey Borzenkov 2009-02-15 12:51:18 +03:00 committed by John W. Linville
parent 486a87f1e5
commit 5c138dcee7
1 changed files with 15 additions and 4 deletions
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19
drivers/net/wireless/orinoco/orinoco.c
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@ -3157,8 +3157,20 @@ static int orinoco_pm_notifier(struct notifier_block *notifier,
return NOTIFY_DONE;
}
static void orinoco_register_pm_notifier(struct orinoco_private *priv)
{
priv->pm_notifier.notifier_call = orinoco_pm_notifier;
register_pm_notifier(&priv->pm_notifier);
}
static void orinoco_unregister_pm_notifier(struct orinoco_private *priv)
{
unregister_pm_notifier(&priv->pm_notifier);
}
#else /* !PM_SLEEP || HERMES_CACHE_FW_ON_INIT */
#define orinoco_pm_notifier NULL
#define orinoco_register_pm_notifier(priv) do { } while(0)
#define orinoco_unregister_pm_notifier(priv) do { } while(0)
#endif
/********************************************************************/
@ -3648,8 +3660,7 @@ struct net_device
priv->cached_fw = NULL;
/* Register PM notifiers */
priv->pm_notifier.notifier_call = orinoco_pm_notifier;
register_pm_notifier(&priv->pm_notifier);
orinoco_register_pm_notifier(priv);
return dev;
}
@ -3673,7 +3684,7 @@ void free_orinocodev(struct net_device *dev)
kfree(rx_data);
}
unregister_pm_notifier(&priv->pm_notifier);
orinoco_unregister_pm_notifier(priv);
orinoco_uncache_fw(priv);
priv->wpa_ie_len = 0;