diff options
| -rw-r--r-- | drivers/ata/intf_platform_ide.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/ata/intf_platform_ide.c b/drivers/ata/intf_platform_ide.c index 1955a9cb6c..af20e05ba2 100644 --- a/drivers/ata/intf_platform_ide.c +++ b/drivers/ata/intf_platform_ide.c @@ -64,10 +64,16 @@ static void platform_ide_setup_port(void *reg_base, void *alt_base, ioaddr->status_addr = reg_base + (IDE_REG_STATUS << shift); ioaddr->command_addr = reg_base + (IDE_REG_CMD << shift); - ioaddr->altstatus_addr = alt_base + (IDE_REG_ALT_STATUS << shift); - ioaddr->ctl_addr = alt_base + (IDE_REG_DEV_CTL << shift); - - ioaddr->alt_dev_addr = alt_base + (IDE_REG_DRV_ADDR << shift); + if (alt_base) { + ioaddr->altstatus_addr = alt_base + (IDE_REG_ALT_STATUS << shift); + ioaddr->ctl_addr = alt_base + (IDE_REG_DEV_CTL << shift); + + ioaddr->alt_dev_addr = alt_base + (IDE_REG_DRV_ADDR << shift); + } else { + ioaddr->altstatus_addr = ioaddr->status_addr; + ioaddr->ctl_addr = ioaddr->status_addr; + /* ioaddr->alt_dev_addr not used in driver */ + } } static int platform_ide_probe(struct device_d *dev) |