sata_inic162x: disable LBA48 devices

sata_inic162x can't do LBA48 properly yet and is likely to corrupt
data on drives larger than LBA28 limit.  Disable LBA48 devices during
device configuration.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/ata/sata_inic162x.c b/drivers/ata/sata_inic162x.c
index 2d80c9d95e95..dc3bbce04676 100644
--- a/drivers/ata/sata_inic162x.c
+++ b/drivers/ata/sata_inic162x.c
@@ -496,6 +496,13 @@ static void inic_dev_config(struct ata_device *dev)
         /* inic can only handle upto LBA28 max sectors */
         if (dev->max_sectors > ATA_MAX_SECTORS)
                 dev->max_sectors = ATA_MAX_SECTORS;
+
+        if (dev->n_sectors >= 1 << 28) {
+                ata_dev_printk(dev, KERN_ERR,
+        "ERROR: This driver doesn't support LBA48 yet and may cause\n"
+        "                data corruption on such devices.  Disabling.\n");
+                ata_dev_disable(dev);
+        }
 }
 
 static void init_port(struct ata_port *ap)