From: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Date: Thu, 19 Jan 2012 20:01:09 +0000 (-0600)
Subject: [SCSI] hpsa: make target and lun match what SCSI REPORT LUNs returns
X-Git-Tag: upstream/snapshot3+hdmi~7783^2~218
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=bbef6c0ce8046114c07f5b6a62ce6a239503dd61;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

[SCSI] hpsa: make target and lun match what SCSI REPORT LUNs returns

Some distros have a "rescan-scsi-bus.sh" script which depends on
SCSI REPORT LUNs not reporting something different than what the
driver tells the kernel, even if the driver uses scan_start and
scan_finished methods of the SCSI host template to override the
usual SCSI midlayer discovery code.  Previously, 1 was added to
the LUN to make room to insert the RAID controller device at
LUN 0.  Now, the RAID controller is moved to bus 3, and 1 is no
longer added to the LUN.  However, SCSI REPORT LUNS on Smart Array
doesn't report physical devices like tape drives or auto-loaders
as it turns out, so those particular device types still won't match.
Generally the logical drives are reported first however, so at
least those should match.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
---

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 4e7df2e..264c176 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -1647,30 +1647,15 @@ static void figure_bus_target_lun(struct ctlr_info *h,
 			*target = (lunid >> 16) & 0x3fff;
 			*lun = lunid & 0x00ff;
 		} else {
-			if (likely(is_scsi_rev_5(h))) {
-				/* All current smart arrays (circa 2011) */
-				*bus = 0;
-				*target = 0;
-				*lun = (lunid & 0x3fff) + 1;
-			} else {
-				/* Traditional old smart array way. */
-				*bus = 0;
-				*target = lunid & 0x3fff;
-				*lun = 0;
-			}
+			*bus = 0;
+			*target = 0;
+			*lun = (lunid & 0x3fff);
 		}
 	} else {
-		/* physical device */
 		if (is_hba_lunid(lunaddrbytes))
-			if (unlikely(is_scsi_rev_5(h))) {
-				*bus = 0; /* put p1210m ctlr at 0,0,0 */
-				*target = 0;
-				*lun = 0;
-				return;
-			} else
-				*bus = 3; /* traditional smartarray */
+			*bus = 3; /* controller */
 		else
-			*bus = 2; /* physical disk */
+			*bus = 2; /* physical device */
 		*target = -1;
 		*lun = -1; /* we will fill these in later. */
 	}