From: Takashi Iwai <tiwai@suse.de>
Date: Tue, 9 Jun 2009 06:16:20 +0000 (+0200)
Subject: ALSA: ctxfi - Add missing start check in atc_pcm_playback_start()
X-Git-Tag: firefly_0821_release~13628^2~4^2~6
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c399f3be82e1249221a7f410855ab1aa747fa82b;p=firefly-linux-kernel-4.4.55.git

ALSA: ctxfi - Add missing start check in atc_pcm_playback_start()

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/sound/pci/ctxfi/ctatc.c b/sound/pci/ctxfi/ctatc.c
index 4e25b24848bd..799eb98e7794 100644
--- a/sound/pci/ctxfi/ctatc.c
+++ b/sound/pci/ctxfi/ctatc.c
@@ -392,6 +392,10 @@ static int atc_pcm_playback_start(struct ct_atc *atc, struct ct_atc_pcm *apcm)
 	unsigned int max_cisz;
 	struct src *src = apcm->src;
 
+	if (apcm->started)
+		return 0;
+	apcm->started = 1;
+
 	max_cisz = src->multi * src->rsc.msr;
 	max_cisz = 0x80 * (max_cisz < 8 ? max_cisz : 8);