From: zhong jiang <zhongjiang@huawei.com>
To: <davem@davemloft.net>
Cc: <jeffrey.t.kirsher@intel.com>, <netdev@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Subject: [PATCH] ethernet: Use dma_zalloc_coherent to replace dma_alloc_coherent + memset
Date: Sat, 18 Aug 2018 22:48:19 +0800 [thread overview]
Message-ID: <1534603699-10120-1-git-send-email-zhongjiang@huawei.com> (raw)
dma_zalloc_coherent has implemented the dma_alloc_coherent() + memset (),
We prefer to dma_zalloc_coherent instead of open-codeing.
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
---
drivers/net/ethernet/intel/ixgb/ixgb_main.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/intel/ixgb/ixgb_main.c b/drivers/net/ethernet/intel/ixgb/ixgb_main.c
index 43664ad..d3e72d0 100644
--- a/drivers/net/ethernet/intel/ixgb/ixgb_main.c
+++ b/drivers/net/ethernet/intel/ixgb/ixgb_main.c
@@ -771,14 +771,13 @@ static pci_ers_result_t ixgb_io_error_detected (struct pci_dev *pdev,
rxdr->size = rxdr->count * sizeof(struct ixgb_rx_desc);
rxdr->size = ALIGN(rxdr->size, 4096);
- rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size, &rxdr->dma,
- GFP_KERNEL);
+ rxdr->desc = dma_zalloc_coherent(&pdev->dev, rxdr->size, &rxdr->dma,
+ GFP_KERNEL);
if (!rxdr->desc) {
vfree(rxdr->buffer_info);
return -ENOMEM;
}
- memset(rxdr->desc, 0, rxdr->size);
rxdr->next_to_clean = 0;
rxdr->next_to_use = 0;
--
1.7.12.4
reply other threads:[~2018-08-18 18:08 UTC|newest]
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