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watchdog: asm9260_wdt: fix error handling in asm9260_wdt_probe()

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[ Upstream commit 3c829f47e33eb0398a9a14e357a05199a7be0277 ]

If devm_reset_control_get_exclusive() fails, asm9260_wdt_probe()
returns immediately. But clks has been already enabled at that point,
so it is required to disable them or to move the code around.

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

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alexey Khoroshilov 2018-02-10 13:17:27 +03:00 committed by Greg Kroah-Hartman
parent 87337cb566
commit 259cdaff0e
1 changed files with 4 additions and 4 deletions
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8
drivers/watchdog/asm9260_wdt.c
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@ -292,14 +292,14 @@ static int asm9260_wdt_probe(struct platform_device *pdev)
if (IS_ERR(priv->iobase))
return PTR_ERR(priv->iobase);
ret = asm9260_wdt_get_dt_clks(priv);
if (ret)
return ret;
priv->rst = devm_reset_control_get_exclusive(&pdev->dev, "wdt_rst");
if (IS_ERR(priv->rst))
return PTR_ERR(priv->rst);
ret = asm9260_wdt_get_dt_clks(priv);
if (ret)
return ret;
wdd = &priv->wdd;
wdd->info = &asm9260_wdt_ident;
wdd->ops = &asm9260_wdt_ops;