libata: Limit max sector to 128 for TORiSAN DVD drives (take 3)

patch 3/4:
  The TORiSAN drive locks up when max sector == 256.
  Limit max sector to 128 for the TORiSAN DRD-N216 drives.
  (http://bugzilla.kernel.org/show_bug.cgi?id=6710)

Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index e07142b4bb5..84f6f857596 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -1784,6 +1784,9 @@ int ata_dev_configure(struct ata_device *dev)
                 dev->max_sectors = ATA_MAX_SECTORS;
         }
 
+        if (ata_device_blacklisted(dev) & ATA_HORKAGE_MAX_SEC_128)
+                dev->max_sectors = min(ATA_MAX_SECTORS_128, dev->max_sectors);
+
         if (ap->ops->dev_config)
                 ap->ops->dev_config(ap, dev);
 
@@ -3352,6 +3355,9 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
         { "_NEC DV5800A",       NULL,           ATA_HORKAGE_NODMA },
         { "SAMSUNG CD-ROM SN-124","N001",       ATA_HORKAGE_NODMA },
 
+        /* Weird ATAPI devices */
+        { "TORiSAN DVD-ROM DRD-N216", NULL,     ATA_HORKAGE_MAX_SEC_128 },
+
         /* Devices we expect to fail diagnostics */
 
         /* Devices where NCQ should be avoided */