diff --git a/[refs] b/[refs]
index 8350a1c57fbd..e6822813bcc6 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ac9af7cba9e642961bfdee1a1fac6060405597e5
+refs/heads/master: 4e6a06eec46067df3c30fe1fbc2e1a7cc37b9678
diff --git a/trunk/sound/ppc/pmac.c b/trunk/sound/ppc/pmac.c
index 844d76152ea2..c89e82eb06a6 100644
--- a/trunk/sound/ppc/pmac.c
+++ b/trunk/sound/ppc/pmac.c
@@ -765,7 +765,8 @@ snd_pmac_ctrl_intr(int irq, void *devid, struct pt_regs *regs)
  */
 static void snd_pmac_sound_feature(pmac_t *chip, int enable)
 {
-	ppc_md.feature_call(PMAC_FTR_SOUND_CHIP_ENABLE, chip->node, 0, enable);
+	if (ppc_md.feature_call)
+		ppc_md.feature_call(PMAC_FTR_SOUND_CHIP_ENABLE, chip->node, 0, enable);
 }
 
 /*