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From:   "John B. Wyatt IV" <jbwyatt4@gmail.com>
To:     outreachy-kernel@googlegroups.com,
        Julia Lawall <julia.lawall@inria.fr>,
        Stefano Brivio <sbrivio@redhat.com>,
        Forest Bond <forest@alittletooquiet.net>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Quentin Deslandes <quentin.deslandes@itdev.co.uk>,
        Colin Ian King <colin.king@canonical.com>,
        Malcolm Priestley <tvboxspy@gmail.com>,
        Oscar Carter <oscar.carter@gmx.com>,
        devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org
Cc:     "John B. Wyatt IV" <jbwyatt4@gmail.com>
Subject: [PATCH] staging: vt6656: add error code handling to unused variable
Date:   Sat, 28 Mar 2020 20:34:35 -0700
Message-Id: <20200329033435.498485-1-jbwyatt4@gmail.com>
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Sender: linux-kernel-owner@vger.kernel.org
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Add error code handling to unused 'ret' variable that was never used.
Return an error code from functions called within vnt_radio_power_on.

Issue reported by coccinelle (coccicheck).

Suggested-by: Quentin Deslandes <quentin.deslandes@itdev.co.uk>
Suggested-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: John B. Wyatt IV <jbwyatt4@gmail.com>
---
 drivers/staging/vt6656/card.c | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

diff --git a/drivers/staging/vt6656/card.c b/drivers/staging/vt6656/card.c
index dc3ab10eb630..9d23c3ec1e60 100644
--- a/drivers/staging/vt6656/card.c
+++ b/drivers/staging/vt6656/card.c
@@ -723,9 +723,13 @@ int vnt_radio_power_on(struct vnt_private *priv)
 {
 	int ret = 0;
 
-	vnt_exit_deep_sleep(priv);
+	ret = vnt_exit_deep_sleep(priv);
+	if (ret)
+		goto end;
 
-	vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_RXON);
+	ret = vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_RXON);
+	if (ret)
+		goto end;
 
 	switch (priv->rf_type) {
 	case RF_AL2230:
@@ -734,13 +738,18 @@ int vnt_radio_power_on(struct vnt_private *priv)
 	case RF_VT3226:
 	case RF_VT3226D0:
 	case RF_VT3342A0:
-		vnt_mac_reg_bits_on(priv, MAC_REG_SOFTPWRCTL,
-				    (SOFTPWRCTL_SWPE2 | SOFTPWRCTL_SWPE3));
+		ret = vnt_mac_reg_bits_on(priv, MAC_REG_SOFTPWRCTL,
+					 (SOFTPWRCTL_SWPE2 | SOFTPWRCTL_SWPE3));
 		break;
 	}
+	if (ret)
+		goto end;
 
-	vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1, GPIO3_INTMD);
+	ret = vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1, GPIO3_INTMD);
+	if (ret)
+		goto end;
 
+end:
 	return ret;
 }
 
-- 
2.25.1