linux-kernel - [PATCH] mfd: mxs-lradc: fix error handling in mxs_lradc

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Date:   Sat, 14 Oct 2017 01:06:56 +0300
From:   Alexey Khoroshilov <khoroshilov@...ras.ru>
To:     Ksenija Stanojevic <ksenija.stanojevic@...il.com>,
        Lee Jones <lee.jones@...aro.org>
Cc:     Alexey Khoroshilov <khoroshilov@...ras.ru>,
        linux-kernel@...r.kernel.org, ldv-project@...uxtesting.org
Subject: [PATCH] mfd: mxs-lradc: fix error handling in mxs_lradc_probe()

There is the only path, where mxs_lradc_probe() leaves clk undisabled,
since it does return instead of goto err_clk.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@...ras.ru>
---
 drivers/mfd/mxs-lradc.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/mfd/mxs-lradc.c b/drivers/mfd/mxs-lradc.c
index 630bd19b2c0a..98e732a7ae96 100644
--- a/drivers/mfd/mxs-lradc.c
+++ b/drivers/mfd/mxs-lradc.c
@@ -196,8 +196,10 @@ static int mxs_lradc_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, lradc);
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res)
-		return -ENOMEM;
+	if (!res) {
+		ret = -ENOMEM;
+		goto err_clk;
+	}
 
 	switch (lradc->soc) {
 	case IMX23_LRADC:
-- 
2.7.4