ide: fix ide_register_hw() to check hwif->io_ports[]

hwif->hw.io_ports[] and hwif->io_ports[] should be the same but "4drives"
support and scc_pata host driver set only hwif->io_ports[].

To compensate for this check hwif->io_ports[] instead of hwif->hw.io_ports[]
in ide_register_hw() (instead of fixing "4drives" and scc_pata because hwif->hw
is to be removed).
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/ide.c

@@ -707,7 +707,7 @@ int ide_register_hw(hw_regs_t *hw, void (*fixup)(ide_hwif_t *),
 	do {
 		for (index = 0; index < MAX_HWIFS; ++index) {
 			hwif = &ide_hwifs[index];
-			if (hwif->hw.io_ports[IDE_DATA_OFFSET] == hw->io_ports[IDE_DATA_OFFSET])
+			if (hwif->io_ports[IDE_DATA_OFFSET] == hw->io_ports[IDE_DATA_OFFSET])
 				goto found;
 		}
 		for (index = 0; index < MAX_HWIFS; ++index) {
@@ -715,7 +715,7 @@ int ide_register_hw(hw_regs_t *hw, void (*fixup)(ide_hwif_t *),
 			if (hwif->hold)
 				continue;
 			if ((!hwif->present && !hwif->mate && !initializing) ||
-			    (!hwif->hw.io_ports[IDE_DATA_OFFSET] && initializing))
+			    (!hwif->io_ports[IDE_DATA_OFFSET] && initializing))
 				goto found;
 		}
 		for (index = 0; index < MAX_HWIFS; index++)