libata: implement dump_id force param

[safe/jmp/linux-2.6] / drivers / ata / libata-core.c

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 8959f42..06b7e49 100644 (file)
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -2126,6 +2126,14 @@ retry:
                goto err_out;
        }
 
+       if (dev->horkage & ATA_HORKAGE_DUMP_ID) {
+               ata_dev_printk(dev, KERN_DEBUG, "dumping IDENTIFY data, "
+                              "class=%d may_fallback=%d tried_spinup=%d\n",
+                              class, may_fallback, tried_spinup);
+               print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET,
+                              16, 2, id, ATA_ID_WORDS * sizeof(*id), true);
+       }
+
        /* Falling back doesn't make sense if ID data was read
         * successfully at least once.
         */
@@ -6377,6 +6385,7 @@ static int __init ata_parse_force_one(char **cur,
                { "3.0Gbps",    .spd_limit      = 2 },
                { "noncq",      .horkage_on     = ATA_HORKAGE_NONCQ },
                { "ncq",        .horkage_off    = ATA_HORKAGE_NONCQ },
+               { "dump_id",    .horkage_on     = ATA_HORKAGE_DUMP_ID },
                { "pio0",       .xfer_mask      = 1 << (ATA_SHIFT_PIO + 0) },
                { "pio1",       .xfer_mask      = 1 << (ATA_SHIFT_PIO + 1) },
                { "pio2",       .xfer_mask      = 1 << (ATA_SHIFT_PIO + 2) },