From: Wolfram Sang Date: Mon, 7 Mar 2016 18:40:57 +0000 (+0100) Subject: pinctrl: sh-pfc: only use dummy states for non-DT platforms X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0129801be4b87226bf502f18f5a9eabd356d1058;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git pinctrl: sh-pfc: only use dummy states for non-DT platforms If pinctrl_provide_dummies() is used unconditionally, then the dummy state will be used even on DT platforms when the "init" state was intentionally left out. Instead of "default", the dummy "init" state will then be used during probe. Thus, when probing an I2C controller on cold boot, communication triggered by bus notifiers broke because the pins were not initialized. Do it like OMAP2: use the dummy state only for non-DT platforms. Cc: stable@vger.kernel.org Fixes: ef0eebc05130 ("drivers/pinctrl: Add the concept of an "init" state") Reported-by: Geert Uytterhoeven Signed-off-by: Wolfram Sang Acked-by: Sergei Shtylyov Tested-by: Geert Uytterhoeven Signed-off-by: Linus Walleij --- diff --git a/drivers/pinctrl/sh-pfc/core.c b/drivers/pinctrl/sh-pfc/core.c index dc3609f0c60b..ee0c1f2567d9 100644 --- a/drivers/pinctrl/sh-pfc/core.c +++ b/drivers/pinctrl/sh-pfc/core.c @@ -546,7 +546,9 @@ static int sh_pfc_probe(struct platform_device *pdev) return ret; } - pinctrl_provide_dummies(); + /* Enable dummy states for those platforms without pinctrl support */ + if (!of_have_populated_dt()) + pinctrl_provide_dummies(); ret = sh_pfc_init_ranges(pfc); if (ret < 0)