diff --git a/[refs] b/[refs]
index 6ebcb0175c7c..ca6de1b07069 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 35379c071a61d025153723f2acb2cc19cc3ca78c
+refs/heads/master: 31a71191650dce1bb4a7de6147f1947795826cda
diff --git a/trunk/drivers/ide/ide-cd.c b/trunk/drivers/ide/ide-cd.c
index d4b298eb5efe..30f27585a7d3 100644
--- a/trunk/drivers/ide/ide-cd.c
+++ b/trunk/drivers/ide/ide-cd.c
@@ -1826,7 +1826,7 @@ static ide_startstop_t cdrom_write_intr(ide_drive_t *drive)
 	}
 
 	/* Read the interrupt reason and the transfer length. */
-	ireason = HWIF(drive)->INB(IDE_IREASON_REG);
+	ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3;
 	lowcyl  = HWIF(drive)->INB(IDE_BCOUNTL_REG);
 	highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG);