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[SCSI] scsi_dh_rdac: Adding the match function for rdac device handler

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This patch introduces the match function for rdac device handler. Without
this, sometimes handler attach fails during the device_add. Included check for
TPGS bit before proceeding further. The match function was introduced by
commit 6c3633d08a

Signed-off-by: Babu Moger <babu.moger@netapp.com>
Acked-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Moger, Babu 2011-12-01 15:01:40 -05:00 committed by James Bottomley
parent a315969e8d
commit bee89eae8d
1 changed files with 19 additions and 0 deletions
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19
drivers/scsi/device_handler/scsi_dh_rdac.c
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@ -820,6 +820,24 @@ static const struct scsi_dh_devlist rdac_dev_list[] = {
{NULL, NULL}, {NULL, NULL},
}; };
static bool rdac_match(struct scsi_device *sdev)
{
int i;
if (scsi_device_tpgs(sdev))
return false;
for (i = 0; rdac_dev_list[i].vendor; i++) {
if (!strncmp(sdev->vendor, rdac_dev_list[i].vendor,
strlen(rdac_dev_list[i].vendor)) &&
!strncmp(sdev->model, rdac_dev_list[i].model,
strlen(rdac_dev_list[i].model))) {
return true;
}
}
return false;
}
static int rdac_bus_attach(struct scsi_device *sdev); static int rdac_bus_attach(struct scsi_device *sdev);
static void rdac_bus_detach(struct scsi_device *sdev); static void rdac_bus_detach(struct scsi_device *sdev);
@ -832,6 +850,7 @@ static struct scsi_device_handler rdac_dh = {
.attach = rdac_bus_attach, .attach = rdac_bus_attach,
.detach = rdac_bus_detach, .detach = rdac_bus_detach,
.activate = rdac_activate, .activate = rdac_activate,
.match = rdac_match,
}; };
static int rdac_bus_attach(struct scsi_device *sdev) static int rdac_bus_attach(struct scsi_device *sdev)