From 51ca1e9f141499fd7c95bff5401215b706656754 Mon Sep 17 00:00:00 2001 From: John Crispin Date: Sat, 23 Apr 2016 09:06:05 +0200 Subject: [PATCH 082/102] net-next: mediatek: add missing return code check The code fails to check if the scratch memory was properly allocated. Add this check and return with an error if the allocation failed. Signed-off-by: Sean Wang Signed-off-by: John Crispin --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -498,6 +498,9 @@ static int mtk_init_fq_dma(struct mtk_et eth->scratch_head = kcalloc(cnt, MTK_QDMA_PAGE_SIZE, GFP_KERNEL); + if (unlikely(!eth->scratch_head)) + return -ENOMEM; + dma_addr = dma_map_single(eth->dev, eth->scratch_head, cnt * MTK_QDMA_PAGE_SIZE, DMA_FROM_DEVICE);