linux-kernel - [PATCH] usb: phy: tahvo: fix error handling in tahvo_usb

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Date:   Sat, 21 Oct 2017 01:02:07 +0300
From:   Alexey Khoroshilov <khoroshilov@...ras.ru>
To:     Chanwoo Choi <cw00.choi@...sung.com>,
        Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Alexey Khoroshilov <khoroshilov@...ras.ru>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        ldv-project@...uxtesting.org
Subject: [PATCH] usb: phy: tahvo: fix error handling in tahvo_usb_probe()

If devm_extcon_dev_allocate() fails, we should disable clk before return.

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

Signed-off-by: Alexey Khoroshilov <khoroshilov@...ras.ru>
Fixes: 860d2686fda7 ("usb: phy: tahvo: Use devm_extcon_dev_[allocate|register]() and replace deprecated API")
---
 drivers/usb/phy/phy-tahvo.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/phy/phy-tahvo.c b/drivers/usb/phy/phy-tahvo.c
index 8babd318c0ed..3bc65350f000 100644
--- a/drivers/usb/phy/phy-tahvo.c
+++ b/drivers/usb/phy/phy-tahvo.c
@@ -368,7 +368,7 @@ static int tahvo_usb_probe(struct platform_device *pdev)
 	tu->extcon = devm_extcon_dev_allocate(&pdev->dev, tahvo_cable);
 	if (IS_ERR(tu->extcon)) {
 		dev_err(&pdev->dev, "failed to allocate memory for extcon\n");
-		return -ENOMEM;
+		goto err_disable_clk;
 	}
 
 	ret = devm_extcon_dev_register(&pdev->dev, tu->extcon);
-- 
2.7.4