SPEAr SoC's don't do anything in clk_prepare() of plgpio driver, so there is no need to call this routine multiple times. Just call it once at probe.
Signed-off-by: Viresh Kumar <viresh.ku...@linaro.org> --- Hi Linus, This patch is rebased over https://lkml.org/lkml/2012/11/14/220 drivers/pinctrl/spear/pinctrl-plgpio.c | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) diff --git a/drivers/pinctrl/spear/pinctrl-plgpio.c b/drivers/pinctrl/spear/pinctrl-plgpio.c index cf6d9c2..5aebbf7 100644 --- a/drivers/pinctrl/spear/pinctrl-plgpio.c +++ b/drivers/pinctrl/spear/pinctrl-plgpio.c @@ -213,7 +213,7 @@ static int plgpio_request(struct gpio_chip *chip, unsigned offset) return ret; if (!IS_ERR(plgpio->clk)) { - ret = clk_prepare_enable(plgpio->clk); + ret = clk_enable(plgpio->clk); if (ret) goto err0; } @@ -244,7 +244,7 @@ static int plgpio_request(struct gpio_chip *chip, unsigned offset) err1: if (!IS_ERR(plgpio->clk)) - clk_disable_unprepare(plgpio->clk); + clk_disable(plgpio->clk); err0: pinctrl_free_gpio(gpio); return ret; @@ -275,7 +275,7 @@ static void plgpio_free(struct gpio_chip *chip, unsigned offset) disable_clk: if (!IS_ERR(plgpio->clk)) - clk_disable_unprepare(plgpio->clk); + clk_disable(plgpio->clk); pinctrl_free_gpio(gpio); } @@ -584,10 +584,18 @@ static int __devinit plgpio_probe(struct platform_device *pdev) plgpio->chip.dev = &pdev->dev; plgpio->chip.owner = THIS_MODULE; + if (!IS_ERR(plgpio->clk)) { + ret = clk_prepare(plgpio->clk); + if (ret) { + dev_err(&pdev->dev, "clk prepare failed\n"); + return ret; + } + } + ret = gpiochip_add(&plgpio->chip); if (ret) { dev_err(&pdev->dev, "unable to add gpio chip\n"); - return ret; + goto unprepare_clk; } irq = platform_get_irq(pdev, 0); @@ -629,6 +637,9 @@ remove_gpiochip: dev_info(&pdev->dev, "Remove gpiochip\n"); if (gpiochip_remove(&plgpio->chip)) dev_err(&pdev->dev, "unable to remove gpiochip\n"); +unprepare_clk: + if (!IS_ERR(plgpio->clk)) + clk_unprepare(plgpio->clk); return ret; } -- 1.7.12.rc2.18.g61b472e -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
