scsi: hpsa: fallback to use legacy REPORT PHYS command

Older SmartArray controllers (eg SmartArray 64xx) do not support the
extended REPORT PHYS command, so fallback to use the legacy version
here.

Signed-off-by: Hannes Reinecke <hare@suse.com>
Acked-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 220ccd4..f5ab690 100644 (file)
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -3632,8 +3632,32 @@ out:
 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
                struct ReportExtendedLUNdata *buf, int bufsize)
 {
-       return hpsa_scsi_do_report_luns(h, 0, buf, bufsize,
-                                               HPSA_REPORT_PHYS_EXTENDED);
+       int rc;
+       struct ReportLUNdata *lbuf;
+
+       rc = hpsa_scsi_do_report_luns(h, 0, buf, bufsize,
+                                     HPSA_REPORT_PHYS_EXTENDED);
+       if (!rc || !hpsa_allow_any)
+               return rc;
+
+       /* REPORT PHYS EXTENDED is not supported */
+       lbuf = kzalloc(sizeof(*lbuf), GFP_KERNEL);
+       if (!lbuf)
+               return -ENOMEM;
+
+       rc = hpsa_scsi_do_report_luns(h, 0, lbuf, sizeof(*lbuf), 0);
+       if (!rc) {
+               int i;
+               u32 nphys;
+
+               /* Copy ReportLUNdata header */
+               memcpy(buf, lbuf, 8);
+               nphys = be32_to_cpu(*((__be32 *)lbuf->LUNListLength)) / 8;
+               for (i = 0; i < nphys; i++)
+                       memcpy(buf->LUN[i].lunid, lbuf->LUN[i], 8);
+       }
+       kfree(lbuf);
+       return rc;
 }
 
 static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h,