libata: implement BROKEN_HPA horkage and apply it to affected drives

Some drives choke on READ_NATIVE_MAX_ADDRESS[_EXT].  Implement
ATA_HORKAGE_BROKEN_HPA and apply it to affected drives.

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

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 9cf46bf8c8d2c4e3c1511fe2a2c66efd5eb3642e..a3ee087223deabf12f9491905fb641c97854fabf 100644 (file)
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -1911,8 +1911,9 @@ int ata_dev_configure(struct ata_device *dev)
                                        dev->flags |= ATA_DFLAG_FLUSH_EXT;
                        }
 
-                       if (ata_id_hpa_enabled(dev->id))
-                               dev->n_sectors = ata_hpa_resize(dev);
+                       if (!(dev->horkage & ATA_HORKAGE_BROKEN_HPA) &&
+                           ata_id_hpa_enabled(dev->id))
+                               dev->n_sectors = ata_hpa_resize(dev);
 
                        /* config NCQ */
                        ata_dev_config_ncq(dev, ncq_desc, sizeof(ncq_desc));
@@ -3795,7 +3796,11 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
        { "ST9160821AS",        "3.CLF",        ATA_HORKAGE_NONCQ, },
        { "SAMSUNG HD401LJ",    "ZZ100-15",     ATA_HORKAGE_NONCQ, },
 
-       /* Devices with NCQ limits */
+       /* devices which puke on READ_NATIVE_MAX */
+       { "HDS724040KLSA80",    "KFAOA20N",     ATA_HORKAGE_BROKEN_HPA, },
+       { "WDC WD3200JD-00KLB0", "WD-WCAMR1130137", ATA_HORKAGE_BROKEN_HPA },
+       { "WDC WD2500JD-00HBB0", "WD-WMAL71490727", ATA_HORKAGE_BROKEN_HPA },
+       { "MAXTOR 6L080L4",     "A93.0500",     ATA_HORKAGE_BROKEN_HPA },
 
        /* End Marker */
        { }

diff --git a/include/linux/libata.h b/include/linux/libata.h
index 41978a5573187c3b4619fd842366ad90f226f97e..a67bb9075e9bbd0023a42e2ede2ed8b0fa601c52 100644 (file)
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -303,6 +303,7 @@ enum {
        ATA_HORKAGE_NODMA       = (1 << 1),     /* DMA problems */
        ATA_HORKAGE_NONCQ       = (1 << 2),     /* Don't use NCQ */
        ATA_HORKAGE_MAX_SEC_128 = (1 << 3),     /* Limit max sects to 128 */
+       ATA_HORKAGE_BROKEN_HPA  = (1 << 4),     /* Broken HPA */
 };
 
 enum hsm_task_states {