netdev - [PATCH] carl9170: Fix error return -EAGAIN if not started

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Message-Id: <20211008001558.32416-1-colin.king@canonical.com>
Date:   Fri,  8 Oct 2021 01:15:58 +0100
From:   Colin King <colin.king@...onical.com>
To:     Christian Lamparter <chunkeey@...glemail.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        "John W . Linville" <linville@...driver.com>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] carl9170: Fix error return -EAGAIN if not started

From: Colin Ian King <colin.king@...onical.com>

There is an error return path where the error return is being
assigned to err rather than count and the error exit path does
not return -EAGAIN as expected. Fix this by setting the error
return to variable count as this is the value that is returned
at the end of the function.

Addresses-Coverity: ("Unused value")
Fixes: 00c4da27a421 ("carl9170: firmware parser and debugfs code")
Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/net/wireless/ath/carl9170/debug.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/carl9170/debug.c b/drivers/net/wireless/ath/carl9170/debug.c
index bb40889d7c72..f163c6bdac8f 100644
--- a/drivers/net/wireless/ath/carl9170/debug.c
+++ b/drivers/net/wireless/ath/carl9170/debug.c
@@ -628,7 +628,7 @@ static ssize_t carl9170_debugfs_bug_write(struct ar9170 *ar, const char *buf,
 
 	case 'R':
 		if (!IS_STARTED(ar)) {
-			err = -EAGAIN;
+			count = -EAGAIN;
 			goto out;
 		}
 
-- 
2.32.0