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hpsa: move scsi_add_device and scsi_remove_device calls to new function 

preparation for adding the sas transport class

Reviewed-by: Scott Teel <scott.teel@pmcs.com>
Reviewed-by: Justin Lindley <justin.lindley@pmcs.com>
Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Signed-off-by: Don Brace <don.brace@pmcs.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Kevin Barnett 2015-11-04 15:51:51 -06:00 committed by Martin K. Petersen
parent c795505a74
commit 096ccff47e
1 changed files with 45 additions and 26 deletions
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71
drivers/scsi/hpsa.c
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@ -1653,6 +1653,43 @@ static void hpsa_update_log_drive_phys_drive_ptrs(struct ctlr_info *h,
}
}
static int hpsa_add_device(struct ctlr_info *h, struct hpsa_scsi_dev_t *device)
{
int rc = 0;
if (!h->scsi_host)
return 1;
rc = scsi_add_device(h->scsi_host, device->bus,
device->target, device->lun);
return rc;
}
static void hpsa_remove_device(struct ctlr_info *h,
struct hpsa_scsi_dev_t *device)
{
struct scsi_device *sdev = NULL;
if (!h->scsi_host)
return;
sdev = scsi_device_lookup(h->scsi_host, device->bus,
device->target, device->lun);
if (sdev) {
scsi_remove_device(sdev);
scsi_device_put(sdev);
} else {
/*
* We don't expect to get here. Future commands
* to this device will get a selection timeout as
* if the device were gone.
*/
hpsa_show_dev_msg(KERN_WARNING, h, device,
"didn't find device for removal.");
}
}
static void adjust_hpsa_scsi_table(struct ctlr_info *h,
struct hpsa_scsi_dev_t *sd[], int nsds)
{
@ -1665,7 +1702,6 @@ static void adjust_hpsa_scsi_table(struct ctlr_info *h,
unsigned long flags;
struct hpsa_scsi_dev_t **added, **removed;
int nadded, nremoved;
struct Scsi_Host *sh = NULL;
/*
* A reset can cause a device status to change
@ -1783,46 +1819,29 @@ static void adjust_hpsa_scsi_table(struct ctlr_info *h,
if (!changes)
goto free_and_out;
sh = h->scsi_host;
if (sh == NULL) {
dev_warn(&h->pdev->dev, "%s: scsi_host is null\n", __func__);
goto free_and_out;
}
/* Notify scsi mid layer of any removed devices */
for (i = 0; i < nremoved; i++) {
if (removed[i] == NULL)
continue;
if (removed[i]->expose_device) {
struct scsi_device *sdev =
scsi_device_lookup(sh, removed[i]->bus,
removed[i]->target, removed[i]->lun);
if (sdev != NULL) {
scsi_remove_device(sdev);
scsi_device_put(sdev);
} else {
/*
* We don't expect to get here.
* future cmds to this device will get selection
* timeout as if the device was gone.
*/
hpsa_show_dev_msg(KERN_WARNING, h, removed[i],
"didn't find device for removal.");
}
}
if (removed[i]->expose_device)
hpsa_remove_device(h, removed[i]);
kfree(removed[i]);
removed[i] = NULL;
}
/* Notify scsi mid layer of any added devices */
for (i = 0; i < nadded; i++) {
int rc = 0;
if (added[i] == NULL)
continue;
if (!(added[i]->expose_device))
continue;
if (scsi_add_device(sh, added[i]->bus,
added[i]->target, added[i]->lun) == 0)
rc = hpsa_add_device(h, added[i]);
if (!rc)
continue;
dev_warn(&h->pdev->dev, "addition failed, device not added.");
dev_warn(&h->pdev->dev,
"addition failed %d, device not added.", rc);
/* now we have to remove it from h->dev,
* since it didn't get added to scsi mid layer
*/