linux-kernel - [PATCH] ti: wlcore: fix error return code of wl1271_cmd_build_ps

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Date:   Sun,  7 Mar 2021 00:29:06 -0800
From:   Jia-Ju Bai <baijiaju1990@...il.com>
To:     kvalo@...eaurora.org, davem@...emloft.net, kuba@...nel.org,
        lee.jones@...aro.org, colin.king@...onical.com
Cc:     linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Jia-Ju Bai <baijiaju1990@...il.com>
Subject: [PATCH] ti: wlcore: fix error return code of wl1271_cmd_build_ps_poll()

When ieee80211_pspoll_get() returns NULL to skb, no error return code of
wl1271_cmd_build_ps_poll() is assigned.
To fix this bug, ret is assigned with -ENOMEM in this case.

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

diff --git a/drivers/net/wireless/ti/wlcore/cmd.c b/drivers/net/wireless/ti/wlcore/cmd.c
index 32a2e27cc561..7bf8b8201fdd 100644
--- a/drivers/net/wireless/ti/wlcore/cmd.c
+++ b/drivers/net/wireless/ti/wlcore/cmd.c
@@ -1120,8 +1120,10 @@ int wl1271_cmd_build_ps_poll(struct wl1271 *wl, struct wl12xx_vif *wlvif,
 	int ret = 0;
 
 	skb = ieee80211_pspoll_get(wl->hw, vif);
-	if (!skb)
+	if (!skb) {
+		ret = -ENOMEM;
 		goto out;
+	}
 
 	ret = wl1271_cmd_template_set(wl, wlvif->role_id,
 				      CMD_TEMPL_PS_POLL, skb->data,
-- 
2.17.1