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Date: Wed, 14 Nov 2012 16:37:45 +0800 From: Axel Lin <axel.lin@...ics.com> To: Linus Walleij <linus.walleij@...aro.org> Cc: Viresh Kumar <viresh.kumar@...aro.org>, spear-devel@...t.st.com, linux-kernel@...r.kernel.org Subject: [PATCH] pinctrl: plgpio: Call clk_disable_unprepare only if clk_prepare_enable is called This driver allows clk_get() failure, and still work without it. This patch adds !IS_ERR(plgpio->clk) checking in plgpio_request() error path so we only call clk_disable_unprepare() if clk_prepare_enable() is called. Signed-off-by: Axel Lin <axel.lin@...ics.com> --- drivers/pinctrl/spear/pinctrl-plgpio.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/pinctrl/spear/pinctrl-plgpio.c b/drivers/pinctrl/spear/pinctrl-plgpio.c index 1044ad3..cf6d9c2 100644 --- a/drivers/pinctrl/spear/pinctrl-plgpio.c +++ b/drivers/pinctrl/spear/pinctrl-plgpio.c @@ -243,7 +243,8 @@ static int plgpio_request(struct gpio_chip *chip, unsigned offset) return 0; err1: - clk_disable_unprepare(plgpio->clk); + if (!IS_ERR(plgpio->clk)) + clk_disable_unprepare(plgpio->clk); err0: pinctrl_free_gpio(gpio); return ret; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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