Index: drivers/sound/via82cxxx_audio.c
===================================================================
RCS file: /cvsroot/gkernel/linux_2_4/drivers/sound/via82cxxx_audio.c,v
retrieving revision 1.1.1.11.2.1
diff -u -r1.1.1.11.2.1 via82cxxx_audio.c
--- drivers/sound/via82cxxx_audio.c	2001/02/04 19:07:03	1.1.1.11.2.1
+++ drivers/sound/via82cxxx_audio.c	2001/02/05 18:24:48
@@ -1649,6 +1649,9 @@
 	u8 status;
 	int n;
 
+	assert (chan != NULL);
+	assert (chan->sgtable != NULL);
+
 	/* check pertinent bits of status register for action bits */
 	status = inb (chan->iobase) & (VIA_SGD_FLAG | VIA_SGD_EOL | VIA_SGD_STOPPED);
 	if (!status)
@@ -1728,6 +1731,8 @@
 {
 	struct via_info *card = dev_id;
 	u32 status32;
+
+	assert (card != NULL);
 
 	/* to minimize interrupt sharing costs, we use the SGD status
 	 * shadow register to check the status of all inputs and