ALSA: fix excessive background noise introduced by OSS emulation rate shrink

Incorrect variable was used to get the next sample which caused S2
to be stuck with the same value resulting in loud background noise.

Signed-off-by: Steve Chen <schen at mvista.com>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/core/oss/rate.c b/sound/core/oss/rate.c
index a466443c4a2649b819147e70d9f041bc1f25b38b..2fa9299a440dbb99e767c079e664d0a1133e8762 100644 (file)
--- a/sound/core/oss/rate.c
+++ b/sound/core/oss/rate.c
@@ -157,7 +157,7 @@ static void resample_shrink(struct snd_pcm_plugin *plugin,
                while (dst_frames1 > 0) {
                        S1 = S2;
                        if (src_frames1-- > 0) {
-                               S1 = *src;
+                               S2 = *src;
                                src += src_step;
                        }
                        if (pos & ~R_MASK) {