diff -ur -X exclude /opt/kernel/linux-2.5.1/drivers/ide/ide-cd.c linux/drivers/ide/ide-cd.c
--- /opt/kernel/linux-2.5.1/drivers/ide/ide-cd.c	Sat Dec  8 23:02:47 2001
+++ linux/drivers/ide/ide-cd.c	Thu Dec 20 07:25:26 2001
@@ -594,7 +594,7 @@
 		cdrom_end_request (1, drive);
 		*startstop = ide_error (drive, "request sense failure", stat);
 		return 1;
-	} else if (rq->flags & REQ_PC) {
+	} else if (rq->flags & (REQ_PC | REQ_BLOCK_PC)) {
 		/* All other functions, except for READ. */
 		struct completion *wait = NULL;
 		pc = (struct packet_command *) rq->special;