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[SCSI] libsas: disable scanning lun > 0 on ata devices 

Currently mvsas and pm8001 have custom ->slave_alloc implementations to
achieve this.  Uplevel it for all libsas drivers as isci encounters problems
with atapi devices when scanning past lun0.

Just do what Darrick suggested [1], and limit the scan for ata devices.

[1] http://marc.info/?l=linux-scsi&m=116604101119861&w=2

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Dan Williams 2011-09-20 15:10:19 -07:00 committed by James Bottomley
parent ffaac8f45b
commit 2fc62e2ac3
1 changed files with 8 additions and 2 deletions
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10
drivers/scsi/scsi_transport_sas.c
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@ -1545,8 +1545,14 @@ int sas_rphy_add(struct sas_rphy *rphy)
if (identify->device_type == SAS_END_DEVICE &&
rphy->scsi_target_id != -1) {
scsi_scan_target(&rphy->dev, 0,
rphy->scsi_target_id, SCAN_WILD_CARD, 0);
int lun;
if (identify->target_port_protocols & SAS_PROTOCOL_SSP)
lun = SCAN_WILD_CARD;
else
lun = 0;
scsi_scan_target(&rphy->dev, 0, rphy->scsi_target_id, lun, 0);
}
return 0;