linux-kernel - [PATCH] driver/scsi/pmcraid: Use pci_zalloc_consistent instead of pci_alloc

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Date:   Wed, 1 Aug 2018 15:08:29 +0800
From:   zhong jiang <zhongjiang@...wei.com>
To:     <jejb@...ux.vnet.ibm.com>, <martin.petersen@...cle.com>
CC:     <linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] driver/scsi/pmcraid: Use pci_zalloc_consistent instead of pci_alloc_consistent+memset

Pci_alloc_consistent+memset is better than pci_alloc_consistent+memset,
and it make the code concise

Signed-off-by: zhong jiang <zhongjiang@...wei.com>
---
 drivers/scsi/pmcraid.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
index 4e86994..8a6facc 100644
--- a/drivers/scsi/pmcraid.c
+++ b/drivers/scsi/pmcraid.c
@@ -4736,11 +4736,9 @@ static int pmcraid_allocate_host_rrqs(struct pmcraid_instance *pinstance)
 	buffer_size = HRRQ_ENTRY_SIZE * PMCRAID_MAX_CMD;
 
 	for (i = 0; i < pinstance->num_hrrq; i++) {
-		pinstance->hrrq_start[i] =
-			pci_alloc_consistent(
-					pinstance->pdev,
-					buffer_size,
-					&(pinstance->hrrq_start_bus_addr[i]));
+		pinstance->hrrq_start[i] = pci_zalloc_consistent(pinstance->pdev,
+								buffer_size,
+								&(pinstance->hrrq_start_bus_addr[i]));
 
 		if (!pinstance->hrrq_start[i]) {
 			pmcraid_err("pci_alloc failed for hrrq vector : %d\n",
@@ -4749,7 +4747,6 @@ static int pmcraid_allocate_host_rrqs(struct pmcraid_instance *pinstance)
 			return -ENOMEM;
 		}
 
-		memset(pinstance->hrrq_start[i], 0, buffer_size);
 		pinstance->hrrq_curr[i] = pinstance->hrrq_start[i];
 		pinstance->hrrq_end[i] =
 			pinstance->hrrq_start[i] + PMCRAID_MAX_CMD - 1;
-- 
1.7.12.4