staging: panel: register reboot
we donot need the reboot notifier in module init section, as the notifier is used after lcd is initialized. so lets register for the reboot notifier only after we have successfully attached to the parallel port. and similarly unregister at detach. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Acked-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -2234,6 +2234,7 @@ static void panel_attach(struct parport *port)
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if (misc_register(&keypad_dev))
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goto err_lcd_unreg;
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}
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register_reboot_notifier(&panel_notifier);
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return;
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err_lcd_unreg:
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@ -2255,6 +2256,8 @@ static void panel_detach(struct parport *port)
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return;
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}
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unregister_reboot_notifier(&panel_notifier);
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if (keypad.enabled && keypad_initialized) {
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misc_deregister(&keypad_dev);
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keypad_initialized = 0;
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@ -2321,7 +2324,6 @@ static int __init panel_init_module(void)
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break;
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}
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/*
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* Overwrite selection with module param values (both keypad and lcd),
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* where the deprecated params have lower prio.
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@ -2391,8 +2393,6 @@ static int __init panel_init_module(void)
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return -EIO;
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}
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register_reboot_notifier(&panel_notifier);
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if (pprt)
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pr_info("driver version " PANEL_VERSION
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" registered on parport%d (io=0x%lx).\n", parport,
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@ -2408,7 +2408,6 @@ static int __init panel_init_module(void)
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static void __exit panel_cleanup_module(void)
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{
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unregister_reboot_notifier(&panel_notifier);
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if (scan_timer.function != NULL)
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del_timer_sync(&scan_timer);
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