ALSA: hda - Avoid doubly suspend after vga switcheroo
The HD-audio driver artificially calls the suspend and the resume code path in the VGA switcheroo state changes. When a machine goes to suspend, it tries to suspend the device again, and it stalls at snd_power_wait(). This patch adds checks whether the devices were already in (forced) suspend in PM callbacks for avoiding the doubly suspend. Reported-by: NDaniel J Blueman <daniel@quora.org> Signed-off-by: NTakashi Iwai <tiwai@suse.de>
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