From: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Date: Thu, 4 Feb 2010 14:42:19 +0000 (-0600)
Subject: [SCSI] hpsa: eliminate unnecessary memcpys
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=6df1e95496f8dfe08a520756187be59f7896f589;p=openwrt%2Fstaging%2Fblogic.git

[SCSI] hpsa: eliminate unnecessary memcpys

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

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 45942007bdc7..ba3deaddf150 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -1483,14 +1483,11 @@ static void figure_bus_target_lun(struct ctlr_info *h,
 	u8 *lunaddrbytes, int *bus, int *target, int *lun,
 	struct hpsa_scsi_dev_t *device)
 {
-
 	u32 lunid;
 
 	if (is_logical_dev_addr_mode(lunaddrbytes)) {
 		/* logical device */
-		memcpy(&lunid, lunaddrbytes, sizeof(lunid));
-		lunid = le32_to_cpu(lunid);
-
+		lunid = le32_to_cpu(*((__le32 *) lunaddrbytes));
 		if (is_msa2xxx(h, device)) {
 			*bus = 1;
 			*target = (lunid >> 16) & 0x3fff;
@@ -1578,8 +1575,7 @@ static int hpsa_gather_lun_info(struct ctlr_info *h,
 		dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
 		return -1;
 	}
-	memcpy(nphysicals, &physdev->LUNListLength[0], sizeof(*nphysicals));
-	*nphysicals = be32_to_cpu(*nphysicals) / 8;
+	*nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 8;
 	if (*nphysicals > HPSA_MAX_PHYS_LUN) {
 		dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded."
 			"  %d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
@@ -1590,8 +1586,7 @@ static int hpsa_gather_lun_info(struct ctlr_info *h,
 		dev_err(&h->pdev->dev, "report logical LUNs failed.\n");
 		return -1;
 	}
-	memcpy(nlogicals, &logdev->LUNListLength[0], sizeof(*nlogicals));
-	*nlogicals = be32_to_cpu(*nlogicals) / 8;
+	*nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8;
 	/* Reject Logicals in excess of our max capability. */
 	if (*nlogicals > HPSA_MAX_LUN) {
 		dev_warn(&h->pdev->dev,