From d78756d842de49608bedc80666ae4c8cbf1e4889 Mon Sep 17 00:00:00 2001 From: Himanshu Jha Date: Sat, 30 Dec 2017 21:09:56 +0530 Subject: IB/ocrdma: Use zeroing memory allocator than allocator/memset Use dma_zalloc_coherent for allocating zeroed memory and remove unnecessary memset function. Done using Coccinelle. Generated-by: scripts/coccinelle/api/alloc/kzalloc-simple.cocci 0-day tested with no failures. Suggested-by: Luis R. Rodriguez Signed-off-by: Himanshu Jha Reviewed-by: Leon Romanovsky Acked-by: Selvin Xavier Signed-off-by: Jason Gunthorpe --- drivers/infiniband/hw/ocrdma/ocrdma_hw.c | 19 +++++++------------ drivers/infiniband/hw/ocrdma/ocrdma_stats.c | 6 ++---- drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | 8 +++----- 3 files changed, 12 insertions(+), 21 deletions(-) (limited to 'drivers/infiniband/hw/ocrdma') diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c index 0ba695a88b62..9904918589a4 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c @@ -380,11 +380,10 @@ static int ocrdma_alloc_q(struct ocrdma_dev *dev, q->len = len; q->entry_size = entry_size; q->size = len * entry_size; - q->va = dma_alloc_coherent(&dev->nic_info.pdev->dev, q->size, - &q->dma, GFP_KERNEL); + q->va = dma_zalloc_coherent(&dev->nic_info.pdev->dev, q->size, + &q->dma, GFP_KERNEL); if (!q->va) return -ENOMEM; - memset(q->va, 0, q->size); return 0; } @@ -1819,12 +1818,11 @@ int ocrdma_mbx_create_cq(struct ocrdma_dev *dev, struct ocrdma_cq *cq, return -ENOMEM; ocrdma_init_mch(&cmd->cmd.req, OCRDMA_CMD_CREATE_CQ, OCRDMA_SUBSYS_COMMON, sizeof(*cmd)); - cq->va = dma_alloc_coherent(&pdev->dev, cq->len, &cq->pa, GFP_KERNEL); + cq->va = dma_zalloc_coherent(&pdev->dev, cq->len, &cq->pa, GFP_KERNEL); if (!cq->va) { status = -ENOMEM; goto mem_err; } - memset(cq->va, 0, cq->len); page_size = cq->len / hw_pages; cmd->cmd.pgsz_pgcnt = (page_size / OCRDMA_MIN_Q_PAGE_SIZE) << OCRDMA_CREATE_CQ_PAGE_SIZE_SHIFT; @@ -2212,10 +2210,9 @@ static int ocrdma_set_create_qp_sq_cmd(struct ocrdma_create_qp_req *cmd, qp->sq.max_cnt = max_wqe_allocated; len = (hw_pages * hw_page_size); - qp->sq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL); + qp->sq.va = dma_zalloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL); if (!qp->sq.va) return -EINVAL; - memset(qp->sq.va, 0, len); qp->sq.len = len; qp->sq.pa = pa; qp->sq.entry_size = dev->attr.wqe_size; @@ -2263,10 +2260,9 @@ static int ocrdma_set_create_qp_rq_cmd(struct ocrdma_create_qp_req *cmd, qp->rq.max_cnt = max_rqe_allocated; len = (hw_pages * hw_page_size); - qp->rq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL); + qp->rq.va = dma_zalloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL); if (!qp->rq.va) return -ENOMEM; - memset(qp->rq.va, 0, len); qp->rq.pa = pa; qp->rq.len = len; qp->rq.entry_size = dev->attr.rqe_size; @@ -2320,11 +2316,10 @@ static int ocrdma_set_create_qp_ird_cmd(struct ocrdma_create_qp_req *cmd, if (dev->attr.ird == 0) return 0; - qp->ird_q_va = dma_alloc_coherent(&pdev->dev, ird_q_len, - &pa, GFP_KERNEL); + qp->ird_q_va = dma_zalloc_coherent(&pdev->dev, ird_q_len, &pa, + GFP_KERNEL); if (!qp->ird_q_va) return -ENOMEM; - memset(qp->ird_q_va, 0, ird_q_len); ocrdma_build_q_pages(&cmd->ird_addr[0], dev->attr.num_ird_pages, pa, ird_page_size); for (; i < ird_q_len / dev->attr.rqe_size; i++) { diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_stats.c b/drivers/infiniband/hw/ocrdma/ocrdma_stats.c index fb78b16ce671..24d20a4aa262 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_stats.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_stats.c @@ -73,15 +73,13 @@ bool ocrdma_alloc_stats_resources(struct ocrdma_dev *dev) mem->size = max_t(u32, sizeof(struct ocrdma_rdma_stats_req), sizeof(struct ocrdma_rdma_stats_resp)); - mem->va = dma_alloc_coherent(&dev->nic_info.pdev->dev, mem->size, - &mem->pa, GFP_KERNEL); + mem->va = dma_zalloc_coherent(&dev->nic_info.pdev->dev, mem->size, + &mem->pa, GFP_KERNEL); if (!mem->va) { pr_err("%s: stats mbox allocation failed\n", __func__); return false; } - memset(mem->va, 0, mem->size); - /* Alloc debugfs mem */ mem->debugfs_mem = kzalloc(OCRDMA_MAX_DBGFS_MEM, GFP_KERNEL); if (!mem->debugfs_mem) diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c index b5f1dd33b73e..8009bdad4e5b 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c @@ -550,13 +550,12 @@ struct ib_ucontext *ocrdma_alloc_ucontext(struct ib_device *ibdev, INIT_LIST_HEAD(&ctx->mm_head); mutex_init(&ctx->mm_list_lock); - ctx->ah_tbl.va = dma_alloc_coherent(&pdev->dev, map_len, - &ctx->ah_tbl.pa, GFP_KERNEL); + ctx->ah_tbl.va = dma_zalloc_coherent(&pdev->dev, map_len, + &ctx->ah_tbl.pa, GFP_KERNEL); if (!ctx->ah_tbl.va) { kfree(ctx); return ERR_PTR(-ENOMEM); } - memset(ctx->ah_tbl.va, 0, map_len); ctx->ah_tbl.len = map_len; memset(&resp, 0, sizeof(resp)); @@ -885,13 +884,12 @@ static int ocrdma_build_pbl_tbl(struct ocrdma_dev *dev, struct ocrdma_hw_mr *mr) return -ENOMEM; for (i = 0; i < mr->num_pbls; i++) { - va = dma_alloc_coherent(&pdev->dev, dma_len, &pa, GFP_KERNEL); + va = dma_zalloc_coherent(&pdev->dev, dma_len, &pa, GFP_KERNEL); if (!va) { ocrdma_free_mr_pbl_tbl(dev, mr); status = -ENOMEM; break; } - memset(va, 0, dma_len); mr->pbl_table[i].va = va; mr->pbl_table[i].pa = pa; } -- cgit v1.2.3-59-g8ed1b