ide: add ide_read_error() inline helper

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c
index b42940d..1ff676cc 100644
--- a/drivers/ide/ide-lib.c
+++ b/drivers/ide/ide-lib.c
@@ -578,7 +578,7 @@
 	}
 	printk("}\n");
 	if ((stat & (BUSY_STAT|ERR_STAT)) == ERR_STAT) {
-		err = drive->hwif->INB(IDE_ERROR_REG);
+		err = ide_read_error(drive);
 		printk("%s: %s: error=0x%02x ", drive->name, msg, err);
 		if (drive->media == ide_disk)
 			ide_dump_ata_error(drive, err);