ixgb: use dma_zalloc_coherent instead of allocator/memset

Use dma_zalloc_coherent instead of dma_alloc_coherent
followed by memset 0.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/ixgb/ixgb_main.c b/drivers/net/ethernet/intel/ixgb/ixgb_main.c
index 43664adf7a3c120d024889ac59f42e2da5d5b1ae..d3e72d0f66ef428b08e4bd88508e05b734bc43a4 100644 (file)
--- a/drivers/net/ethernet/intel/ixgb/ixgb_main.c
+++ b/drivers/net/ethernet/intel/ixgb/ixgb_main.c
@@ -771,14 +771,13 @@ ixgb_setup_rx_resources(struct ixgb_adapter *adapter)
        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;