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authorTejun Heo <tj@kernel.org>2010-05-23 12:59:11 +0200
committerJeff Garzik <jgarzik@redhat.com>2010-05-25 19:41:19 -0400
commit43c9c59185eec7caaff6e9dd8d4c93a4d9836a86 (patch)
tree6c627f018b6d83c448d059d61fff0fafd8c55b86 /drivers/ata
parente7ecd435692ca9bde9d124be30b3a26e672ea6c2 (diff)
downloadlinux-2.6.34-ux500-43c9c59185eec7caaff6e9dd8d4c93a4d9836a86.tar.gz
libata: implement dump_id force param
Add dump_id libata.force parameter. If specified, libata dumps full IDENTIFY data during device configuration. This is to aid debugging. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Larry Baker <baker@usgs.gov> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata')
-rw-r--r--drivers/ata/libata-core.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 8959f42c5b3..06b7e49e039 100644
--- 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) },