ALSA: cs46xx - Fix minimum period size

Fix minimum period size for cs46xx cards. This fixes a problem in the
case where neither a period size nor a buffer size is passed to ALSA;
this is the case in Audacious, OpenAL, and others.
Signed-off-by: NSophie Hamilton <kernel@theblob.org>
Cc: <stable@kernel.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/pci/cs46xx/cs46xx_lib.h

@@ -35,7 +35,7 @@
 
 
 #ifdef CONFIG_SND_CS46XX_NEW_DSP
-#define CS46XX_MIN_PERIOD_SIZE 1
+#define CS46XX_MIN_PERIOD_SIZE 64
 #define CS46XX_MAX_PERIOD_SIZE 1024*1024
 #else
 #define CS46XX_MIN_PERIOD_SIZE 2048