rz1000: set serialized flag only if mate interface exists

Setting hwif->serialized makes sense only if the mate interface exists.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/ide/pci/rz1000.c b/drivers/ide/pci/rz1000.c
index dd2583ef1ad7..0d76af45db6b 100644
--- a/drivers/ide/pci/rz1000.c
+++ b/drivers/ide/pci/rz1000.c
@@ -41,7 +41,8 @@ static void __devinit init_hwif_rz1000 (ide_hwif_t *hwif)
                 printk(KERN_INFO "%s: disabled chipset read-ahead "
                         "(buggy RZ1000/RZ1001)\n", hwif->name);
         } else {
-                hwif->serialized = 1;
+                if (hwif->mate)
+                        hwif->mate->serialized = hwif->serialized = 1;
                 hwif->drives[0].no_unmask = 1;
                 hwif->drives[1].no_unmask = 1;
                 printk(KERN_INFO "%s: serialized, disabled unmasking "