From: Takashi Iwai <tiwai@suse.de>
Date: Fri, 3 Jul 2009 21:03:30 +0000 (+0200)
Subject: ALSA: hda - Avoid invalid formats and rates with shared SPDIF
X-Git-Tag: v2.6.31-rc2~6^2~1^2~2
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=022b466fc353d3dc7a152451144be656248666ce;p=~shefty%2Frdma-dev.git

ALSA: hda - Avoid invalid formats and rates with shared SPDIF

Check whether formats and rates don't result in zero due to the
restriction of SPDIF sharing.  If any of them can be zero, disable
the SPDIF sharing mode instead.  Otherwise it will lead to a PCM
configuration error.

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

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 462e2cedaa6..26d255de6be 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -3470,10 +3470,16 @@ int snd_hda_multi_out_analog_open(struct hda_codec *codec,
 		}
 		mutex_lock(&codec->spdif_mutex);
 		if (mout->share_spdif) {
-			runtime->hw.rates &= mout->spdif_rates;
-			runtime->hw.formats &= mout->spdif_formats;
-			if (mout->spdif_maxbps < hinfo->maxbps)
-				hinfo->maxbps = mout->spdif_maxbps;
+			if ((runtime->hw.rates & mout->spdif_rates) &&
+			    (runtime->hw.formats & mout->spdif_formats)) {
+				runtime->hw.rates &= mout->spdif_rates;
+				runtime->hw.formats &= mout->spdif_formats;
+				if (mout->spdif_maxbps < hinfo->maxbps)
+					hinfo->maxbps = mout->spdif_maxbps;
+			} else {
+				mout->share_spdif = 0;
+				/* FIXME: need notify? */
+			}
 		}
 		mutex_unlock(&codec->spdif_mutex);
 	}