Replace some 'dma_alloc_coherent+memset' by some quivalent
'dma_zalloc_coherent' in order to reduce code verbosity

Signed-off-by: Christophe JAILLET <[email protected]>
---
This patch generates some checkpatch errors about the use of space to indent 
code.
I've left it as-is to keep consistency with the style used in this file.
---
 drivers/scsi/qedi/qedi_main.c | 39 ++++++++++++++++-----------------------
 1 file changed, 16 insertions(+), 23 deletions(-)

diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c
index c81e494a9067..37bf881ccfb3 100644
--- a/drivers/scsi/qedi/qedi_main.c
+++ b/drivers/scsi/qedi/qedi_main.c
@@ -1241,16 +1241,15 @@ static int qedi_alloc_bdq(struct qedi_ctx *qedi)
        }
 
        /* Allocate list of PBL pages */
-       qedi->bdq_pbl_list = dma_alloc_coherent(&qedi->pdev->dev,
-                                               PAGE_SIZE,
-                                               &qedi->bdq_pbl_list_dma,
-                                               GFP_KERNEL);
+       qedi->bdq_pbl_list = dma_zalloc_coherent(&qedi->pdev->dev,
+                                                PAGE_SIZE,
+                                                &qedi->bdq_pbl_list_dma,
+                                                GFP_KERNEL);
        if (!qedi->bdq_pbl_list) {
                QEDI_ERR(&qedi->dbg_ctx,
                         "Could not allocate list of PBL pages.\n");
                return -ENOMEM;
        }
-       memset(qedi->bdq_pbl_list, 0, PAGE_SIZE);
 
        /*
         * Now populate PBL list with pages that contain pointers to the
@@ -1337,10 +1336,10 @@ static int qedi_alloc_global_queues(struct qedi_ctx 
*qedi)
                    (QEDI_PAGE_SIZE - 1));
 
                qedi->global_queues[i]->cq =
-                   dma_alloc_coherent(&qedi->pdev->dev,
-                                      qedi->global_queues[i]->cq_mem_size,
-                                      &qedi->global_queues[i]->cq_dma,
-                                      GFP_KERNEL);
+                   dma_zalloc_coherent(&qedi->pdev->dev,
+                                       qedi->global_queues[i]->cq_mem_size,
+                                       &qedi->global_queues[i]->cq_dma,
+                                       GFP_KERNEL);
 
                if (!qedi->global_queues[i]->cq) {
                        QEDI_WARN(&qedi->dbg_ctx,
@@ -1348,14 +1347,12 @@ static int qedi_alloc_global_queues(struct qedi_ctx 
*qedi)
                        status = -ENOMEM;
                        goto mem_alloc_failure;
                }
-               memset(qedi->global_queues[i]->cq, 0,
-                      qedi->global_queues[i]->cq_mem_size);
 
                qedi->global_queues[i]->cq_pbl =
-                   dma_alloc_coherent(&qedi->pdev->dev,
-                                      qedi->global_queues[i]->cq_pbl_size,
-                                      &qedi->global_queues[i]->cq_pbl_dma,
-                                      GFP_KERNEL);
+                   dma_zalloc_coherent(&qedi->pdev->dev,
+                                       qedi->global_queues[i]->cq_pbl_size,
+                                       &qedi->global_queues[i]->cq_pbl_dma,
+                                       GFP_KERNEL);
 
                if (!qedi->global_queues[i]->cq_pbl) {
                        QEDI_WARN(&qedi->dbg_ctx,
@@ -1363,8 +1360,6 @@ static int qedi_alloc_global_queues(struct qedi_ctx *qedi)
                        status = -ENOMEM;
                        goto mem_alloc_failure;
                }
-               memset(qedi->global_queues[i]->cq_pbl, 0,
-                      qedi->global_queues[i]->cq_pbl_size);
 
                /* Create PBL */
                num_pages = qedi->global_queues[i]->cq_mem_size /
@@ -1425,25 +1420,23 @@ int qedi_alloc_sq(struct qedi_ctx *qedi, struct 
qedi_endpoint *ep)
        ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *);
        ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE;
 
-       ep->sq = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_mem_size,
-                                   &ep->sq_dma, GFP_KERNEL);
+       ep->sq = dma_zalloc_coherent(&qedi->pdev->dev, ep->sq_mem_size,
+                                    &ep->sq_dma, GFP_KERNEL);
        if (!ep->sq) {
                QEDI_WARN(&qedi->dbg_ctx,
                          "Could not allocate send queue.\n");
                rval = -ENOMEM;
                goto out;
        }
-       memset(ep->sq, 0, ep->sq_mem_size);
 
-       ep->sq_pbl = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size,
-                                       &ep->sq_pbl_dma, GFP_KERNEL);
+       ep->sq_pbl = dma_zalloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size,
+                                        &ep->sq_pbl_dma, GFP_KERNEL);
        if (!ep->sq_pbl) {
                QEDI_WARN(&qedi->dbg_ctx,
                          "Could not allocate send queue PBL.\n");
                rval = -ENOMEM;
                goto out_free_sq;
        }
-       memset(ep->sq_pbl, 0, ep->sq_pbl_size);
 
        /* Create PBL */
        num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE;
-- 
2.11.0

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