From: "Stephen M. Cameron" <scameron@beardog.cce.hp.com>
To: James.Bottomley@HansenPartnership.com, akpm@linux-foundation.org
Cc: mikem@beardog.cce.hp.com, brace@beardog.cce.hp.com,
matthew.gates@hp.com, linux-scsi@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 11/30] hpsa: eliminate unnecessary memcpys
Date: Thu, 04 Feb 2010 08:42:19 -0600 [thread overview]
Message-ID: <20100204144219.10406.86923.stgit@beardog.cce.hp.com> (raw)
In-Reply-To: <20100204144012.10406.14868.stgit@beardog.cce.hp.com>
From: Stephen M. Cameron <scameron@beardog.cce.hp.com>
hpsa: eliminate unnecessary memcpys
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
---
drivers/scsi/hpsa.c | 11 +++--------
1 files changed, 3 insertions(+), 8 deletions(-)
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 4594200..ba3dead 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,
next prev parent reply other threads:[~2010-02-04 14:39 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-04 14:41 [PATCH 00/30] hpsa: Feb 2010 driver updates Stephen M. Cameron
2010-02-04 14:41 ` [PATCH 01/30] hpsa: fix typo in comments Stephen M. Cameron
2010-02-04 14:41 ` [PATCH 02/30] hpsa: Use kernel integer types, not userland ones Stephen M. Cameron
2010-02-04 14:41 ` [PATCH 03/30] hpsa: avoid unwanted promotion from unsigned to signed for raid level index Stephen M. Cameron
2010-02-04 14:41 ` [PATCH 04/30] hpsa: Use BUG_ON instead of an if statement Stephen M. Cameron
2010-02-04 14:41 ` [PATCH 05/30] hpsa: make adjust_hpsa_scsi_table return void Stephen M. Cameron
2010-02-04 14:41 ` [PATCH 06/30] hpsa: remove superfluous returns from void functions Stephen M. Cameron
2010-02-04 14:41 ` [PATCH 07/30] hpsa: return proper error codes not minus one Stephen M. Cameron
2010-02-04 14:42 ` [PATCH 08/30] hpsa: use sizeof() not an inline constant in memset Stephen M. Cameron
2010-02-04 14:42 ` [PATCH 09/30] hpsa: use kzalloc not kmalloc plus memset Stephen M. Cameron
2010-02-04 14:42 ` [PATCH 10/30] hpsa: remove unwanted debug code Stephen M. Cameron
2010-02-04 14:42 ` Stephen M. Cameron [this message]
2010-02-04 14:42 ` [PATCH 12/30] hpsa: make tag macros into functions Stephen M. Cameron
2010-02-04 14:42 ` [PATCH 13/30] hpsa: fix some debug printks to use dev_dbg instead Stephen M. Cameron
2010-02-04 14:42 ` [PATCH 14/30] hpsa: interrupt pending function should return bool not unsigned long Stephen M. Cameron
2010-02-04 14:42 ` [PATCH 15/30] hpsa: Allow multiple command completions per interrupt Stephen M. Cameron
2010-02-04 14:42 ` [PATCH 16/30] hpsa: add pci ids for storageworks 1210m, remove p400, p800, p700m Stephen M. Cameron
2010-02-04 14:42 ` [PATCH 17/30] hpsa: Fix p1210m LUN assignment Stephen M. Cameron
2010-02-04 14:42 ` [PATCH 18/30] hpsa: Return DID_RESET for commands which complete with status of UNSOLICITED ABORT Stephen M. Cameron
2010-02-04 14:43 ` [PATCH 19/30] hpsa: Retry commands completing with a sense key of ABORTED_COMMAND Stephen M. Cameron
2010-02-04 14:43 ` [PATCH 20/30] hpsa: Don't return DID_NO_CONNECT when a device is merely not ready Stephen M. Cameron
2010-02-04 14:43 ` [PATCH 21/30] hpsa: Add an shost_to_hba helper function Stephen M. Cameron
2010-02-04 14:43 ` [PATCH 22/30] hpsa: use scan_start and scan_finished entry points for scanning Stephen M. Cameron
2010-02-04 14:43 ` [PATCH 23/30] hpsa: when resetting devices, print out which device Stephen M. Cameron
2010-02-04 14:43 ` [PATCH 24/30] hpsa: print all the bytes of the CDB, not just the first one Stephen M. Cameron
2010-02-04 14:43 ` [PATCH 25/30] hpsa: clarify obscure comment in adjust_hpsa_scsi_table Stephen M. Cameron
2010-02-04 14:43 ` [PATCH 26/30] hpsa: Fix hpsa_find_scsi_entry so that it doesn't try to dereference NULL pointers Stephen M. Cameron
2010-02-04 14:43 ` [PATCH 27/30] hpsa: fix bug in adjust_hpsa_scsi_table Stephen M. Cameron
2010-02-04 14:43 ` [PATCH 28/30] hpsa: eliminate lock_kernel in compat_ioctl Stephen M. Cameron
2010-02-04 14:43 ` [PATCH 29/30] hpsa: Reorder compat ioctl functions to eliminate some forward declarations Stephen M. Cameron
2010-02-04 14:43 ` [PATCH 30/30] hpsa: `update driver version to 2.0.1-3 Stephen M. Cameron
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