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net: stmmac: ensure jumbo_frm error return is correctly checked for -ve value

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[ Upstream commit 594238158b ]

The current comparison of entry < 0 will never be true since entry is an
unsigned integer. Make entry an int to ensure -ve error return values
from the call to jumbo_frm are correctly being caught.

Detected by CoverityScan, CID#1238760 ("Macro compares unsigned to 0")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Colin Ian King
2017-06-05 10:04:52 +01:00
committed by Chris
parent 3c37c0ca86
commit e231ae854f
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
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@@ -2241,7 +2241,8 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
unsigned int nopaged_len = skb_headlen(skb);
int i, csum_insertion = 0, is_jumbo = 0;
int nfrags = skb_shinfo(skb)->nr_frags;
unsigned int entry, first_entry;
int entry;
unsigned int first_entry;
struct dma_desc *desc, *first;
unsigned int enh_desc;
unsigned int des;