[PATCH 02/12] net: mediatek: add missing return code check
From: John Crispin <hidden>
Date: 2016-06-05 06:34:09
Also in:
lkml, netdev
Subsystem:
mediatek ethernet driver, networking drivers, the rest · Maintainers:
Felix Fietkau, Lorenzo Bianconi, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
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: John Crispin <redacted> --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 45f8dbf..6780886 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c@@ -467,6 +467,9 @@ static int mtk_init_fq_dma(struct mtk_eth *eth) 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);
--
1.7.10.4