[PATCH V2 01/11] net: mediatek: add missing return code check

From: John Crispin
Date: Fri Jun 10 2016 - 07:29:50 EST


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 <john@xxxxxxxxxxx>
---
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