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IB/hns: Use zeroing memory allocator instead of allocator/memset 

Use dma_zalloc_coherent for allocating zeroed memory and
remove unnecessary memset function.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
YueHaibing 2018-06-03 17:32:22 +08:00 committed by Jason Gunthorpe
parent cb2595c139
commit 8c61b24585
1 changed files with 3 additions and 5 deletions
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8
drivers/infiniband/hw/hns/hns_roce_alloc.c
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@ -197,7 +197,8 @@ int hns_roce_buf_alloc(struct hns_roce_dev *hr_dev, u32 size, u32 max_direct,
buf->npages = 1 << order;
buf->page_shift = page_shift;
/* MTT PA must be recorded in 4k alignment, t is 4k aligned */
buf->direct.buf = dma_alloc_coherent(dev, size, &t, GFP_KERNEL);
buf->direct.buf = dma_zalloc_coherent(dev,
size, &t, GFP_KERNEL);
if (!buf->direct.buf)
return -ENOMEM;
@ -207,8 +208,6 @@ int hns_roce_buf_alloc(struct hns_roce_dev *hr_dev, u32 size, u32 max_direct,
--buf->page_shift;
buf->npages *= 2;
}
memset(buf->direct.buf, 0, size);
} else {
buf->nbufs = (size + page_size - 1) / page_size;
buf->npages = buf->nbufs;
@ -220,7 +219,7 @@ int hns_roce_buf_alloc(struct hns_roce_dev *hr_dev, u32 size, u32 max_direct,
return -ENOMEM;
for (i = 0; i < buf->nbufs; ++i) {
buf->page_list[i].buf = dma_alloc_coherent(dev,
buf->page_list[i].buf = dma_zalloc_coherent(dev,
page_size, &t,
GFP_KERNEL);
@ -228,7 +227,6 @@ int hns_roce_buf_alloc(struct hns_roce_dev *hr_dev, u32 size, u32 max_direct,
goto err_free;
buf->page_list[i].map = t;
memset(buf->page_list[i].buf, 0, page_size);
}
}