linux-kernel - [PATCH 3.16 086/346] i2c: efm32: fix a failure path in efm32_i2c

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Date:   Mon, 14 Nov 2016 00:14:20 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org,
        "Uwe Kleine-König" <u.kleine-koenig@...gutronix.de>,
        "Wolfram Sang" <wsa@...-dreams.de>,
        "Alexey Khoroshilov" <khoroshilov@...ras.ru>
Subject: [PATCH 3.16 086/346] i2c: efm32: fix a failure path in
 efm32_i2c_probe()

3.16.39-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Alexey Khoroshilov <khoroshilov@...ras.ru>

commit 7dd91d52a813f99a95d20f539b777e9e6198b931 upstream.

There is the only failure path in efm32_i2c_probe(),
where clk_disable_unprepare() is missed.

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

Signed-off-by: Alexey Khoroshilov <khoroshilov@...ras.ru>
Acked-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
Signed-off-by: Wolfram Sang <wsa@...-dreams.de>
Fixes: 1b5b23718b84 ("i2c: efm32: new bus driver")
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/i2c/busses/i2c-efm32.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/i2c/busses/i2c-efm32.c
+++ b/drivers/i2c/busses/i2c-efm32.c
@@ -427,7 +427,7 @@ static int efm32_i2c_probe(struct platfo
 	ret = request_irq(ddata->irq, efm32_i2c_irq, 0, DRIVER_NAME, ddata);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "failed to request irq (%d)\n", ret);
-		return ret;
+		goto err_disable_clk;
 	}
 
 	ret = i2c_add_adapter(&ddata->adapter);