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[02/12] net-next: mediatek: add missing return code check

Message ID 1462440385-51939-3-git-send-email-john@phrozen.org (mailing list archive)
State New, archived
Headers show

Commit Message

John Crispin May 5, 2016, 9:26 a.m. UTC 
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@phrozen.org>
---
 drivers/net/ethernet/mediatek/mtk_eth_soc.c |    3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 07674e5..0ed49a4 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -483,6 +483,9 @@  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);