umc8672: don't use ide_hwifs[] in umc_set_pio_mode()

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

diff --git a/drivers/ide/legacy/umc8672.c b/drivers/ide/legacy/umc8672.c
index bc19448..ef768a8 100644 (file)
--- a/drivers/ide/legacy/umc8672.c
+++ b/drivers/ide/legacy/umc8672.c
@@ -105,13 +105,13 @@ static void umc_set_speeds (u8 speeds[])
 
 static void umc_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
+       ide_hwif_t *hwif = drive->hwif;
        unsigned long flags;
-       ide_hwgroup_t *hwgroup = ide_hwifs[HWIF(drive)->index^1].hwgroup;
 
        printk("%s: setting umc8672 to PIO mode%d (speed %d)\n",
                drive->name, pio, pio_to_umc[pio]);
        spin_lock_irqsave(&ide_lock, flags);
-       if (hwgroup && hwgroup->handler != NULL) {
+       if (hwif->mate && hwif->mate->hwgroup->handler) {
                printk(KERN_ERR "umc8672: other interface is busy: exiting tune_umc()\n");
        } else {
                current_speeds[drive->name[2] - 'a'] = pio_to_umc[pio];