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firmware: always enable the reboot notifier 

Now that we've have proper wrappers for the fallback mechanism
we can easily share the reboot notifier for the firmware_class
at all times.

This change will make subsequent modifications to the reboot
notifier easier to review.

Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
hifive-unleashed-5.1
Luis R. Rodriguez 2017-05-02 01:31:04 -07:00 committed by Greg Kroah-Hartman
parent c4b768934b
commit a669f04ab4
1 changed files with 18 additions and 19 deletions
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37
drivers/base/firmware_class.c
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@ -575,23 +575,6 @@ static void kill_pending_fw_fallback_reqs(bool only_kill_custom)
mutex_unlock(&fw_lock);
}
/* reboot notifier for avoid deadlock with usermode_lock */
static int fw_shutdown_notify(struct notifier_block *unused1,
unsigned long unused2, void *unused3)
{
/*
* Kill all pending fallback requests to avoid both stalling shutdown,
* and avoid a deadlock with the usermode_lock.
*/
kill_pending_fw_fallback_reqs(false);
return NOTIFY_DONE;
}
static struct notifier_block fw_shutdown_nb = {
.notifier_call = fw_shutdown_notify,
};
static ssize_t timeout_show(struct class *class, struct class_attribute *attr,
char *buf)
{
@ -1782,11 +1765,27 @@ static void __init fw_cache_init(void)
#endif
}
static int fw_shutdown_notify(struct notifier_block *unused1,
unsigned long unused2, void *unused3)
{
/*
* Kill all pending fallback requests to avoid both stalling shutdown,
* and avoid a deadlock with the usermode_lock.
*/
kill_pending_fw_fallback_reqs(false);
return NOTIFY_DONE;
}
static struct notifier_block fw_shutdown_nb = {
.notifier_call = fw_shutdown_notify,
};
static int __init firmware_class_init(void)
{
fw_cache_init();
#ifdef CONFIG_FW_LOADER_USER_HELPER
register_reboot_notifier(&fw_shutdown_nb);
#ifdef CONFIG_FW_LOADER_USER_HELPER
return class_register(&firmware_class);
#else
return 0;
@ -1799,8 +1798,8 @@ static void __exit firmware_class_exit(void)
unregister_syscore_ops(&fw_syscore_ops);
unregister_pm_notifier(&fw_cache.pm_notify);
#endif
#ifdef CONFIG_FW_LOADER_USER_HELPER
unregister_reboot_notifier(&fw_shutdown_nb);
#ifdef CONFIG_FW_LOADER_USER_HELPER
class_unregister(&firmware_class);
#endif
}