linux-kernel - [PATCH] ath: ath6kl: fix error return code of ath6kl_htc_rx

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Date:   Sun,  7 Mar 2021 01:07:57 -0800
From:   Jia-Ju Bai <baijiaju1990@...il.com>
To:     kvalo@...eaurora.org, davem@...emloft.net, kuba@...nel.org
Cc:     linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Jia-Ju Bai <baijiaju1990@...il.com>
Subject: [PATCH] ath: ath6kl: fix error return code of ath6kl_htc_rx_bundle()

When hif_scatter_req_get() returns NULL to scat_req, no error return
code of ath6kl_htc_rx_bundle() is assigned.
To fix this bug, status is assigned with -EINVAL in this case.

Reported-by: TOTE Robot <oslab@...nghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@...il.com>
---
 drivers/net/wireless/ath/ath6kl/htc_mbox.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath6kl/htc_mbox.c b/drivers/net/wireless/ath/ath6kl/htc_mbox.c
index 998947ef63b6..3f8857d19a0c 100644
--- a/drivers/net/wireless/ath/ath6kl/htc_mbox.c
+++ b/drivers/net/wireless/ath/ath6kl/htc_mbox.c
@@ -1944,8 +1944,10 @@ static int ath6kl_htc_rx_bundle(struct htc_target *target,
 
 	scat_req = hif_scatter_req_get(target->dev->ar);
 
-	if (scat_req == NULL)
+	if (scat_req == NULL) {
+		status = -EINVAL;
 		goto fail_rx_pkt;
+	}
 
 	for (i = 0; i < n_scat_pkt; i++) {
 		int pad_len;
-- 
2.17.1