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authorJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-06-10 19:51:23 +0400
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-06-10 19:51:23 +0400
commit60eef25701d25e99c991dd0f4a9f3832a0c3ad3e (patch)
tree6aedae05234660d5e188328c6165a760fbde4727 /drivers/scsi/scsi_transport_spi.c
parentb2d8bfe18578c4e50e8ba52011c9b260a1b51dac (diff)
downloadlinux-60eef25701d25e99c991dd0f4a9f3832a0c3ad3e.tar.xz
[SCSI] spi transport: don't allow dt to be set on SE or HVD buses
This is really just a belt and braces test. The standards require disks to respond DT not capable on a non-LVD bus ... however, not all disks follow the standards ... Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/scsi_transport_spi.c')
-rw-r--r--drivers/scsi/scsi_transport_spi.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_transport_spi.c b/drivers/scsi/scsi_transport_spi.c
index 5829f97a2068..ace49d5bd9c4 100644
--- a/drivers/scsi/scsi_transport_spi.c
+++ b/drivers/scsi/scsi_transport_spi.c
@@ -785,6 +785,7 @@ spi_dv_device_internal(struct scsi_device *sdev, u8 *buffer)
{
struct spi_internal *i = to_spi_internal(sdev->host->transportt);
struct scsi_target *starget = sdev->sdev_target;
+ struct Scsi_Host *shost = sdev->host;
int len = sdev->inquiry_len;
/* first set us up for narrow async */
DV_SET(offset, 0);
@@ -844,6 +845,14 @@ spi_dv_device_internal(struct scsi_device *sdev, u8 *buffer)
if (spi_min_period(starget) == 8)
DV_SET(pcomp_en, 1);
}
+ /* now that we've done all this, actually check the bus
+ * signal type (if known). Some devices are stupid on
+ * a SE bus and still claim they can try LVD only settings */
+ if (i->f->get_signalling)
+ i->f->get_signalling(shost);
+ if (spi_signalling(shost) == SPI_SIGNAL_SE ||
+ spi_signalling(shost) == SPI_SIGNAL_HVD)
+ DV_SET(dt, 0);
/* Do the read only INQUIRY tests */
spi_dv_retrain(sdev, buffer, buffer + sdev->inquiry_len,
spi_dv_device_compare_inquiry);