| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.4 173/312] ath9k_htc: check for underflow in ath9k_htc_rx_msg() | Date | Fri, 8 May 2020 14:32:44 +0200 |
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From: Dan Carpenter <dan.carpenter@oracle.com>
commit 3a318426e09a9c9266fe6440842e11238f640a20 upstream.
We check for overflow here, but we don't check for underflow so it causes a static checker warning.
Fixes: fb9987d0f748 ('ath9k_htc: Support for AR9271 chipset.') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/net/wireless/ath/ath9k/htc_hst.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/wireless/ath/ath9k/htc_hst.c +++ b/drivers/net/wireless/ath/ath9k/htc_hst.c @@ -414,7 +414,7 @@ void ath9k_htc_rx_msg(struct htc_target return; } - if (epid >= ENDPOINT_MAX) { + if (epid < 0 || epid >= ENDPOINT_MAX) { if (pipe_id != USB_REG_IN_PIPE) dev_kfree_skb_any(skb); else
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