| Message ID | 1460414035-24059-1-git-send-email-kamal@canonical.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/drivers/pinctrl/sh-pfc/core.c b/drivers/pinctrl/sh-pfc/core.c index 865d235..7c7439f 100644 --- a/drivers/pinctrl/sh-pfc/core.c +++ b/drivers/pinctrl/sh-pfc/core.c @@ -543,7 +543,9 @@ 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)
This is a note to let you know that I have just added a patch titled pinctrl: sh-pfc: only use dummy states for non-DT platforms to the linux-4.2.y-queue branch of the 4.2.y-ckt extended stable tree which can be found at: http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-4.2.y-queue This patch is scheduled to be released in version 4.2.8-ckt8. If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 4.2.y-ckt tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Kamal ---8<------------------------------------------------------------ From d6308e7418f14914fe2eedfd5a2af314f08d14e3 Mon Sep 17 00:00:00 2001 From: Wolfram Sang <wsa+renesas@sang-engineering.com> Date: Mon, 7 Mar 2016 19:40:57 +0100 Subject: pinctrl: sh-pfc: only use dummy states for non-DT platforms commit 0129801be4b87226bf502f18f5a9eabd356d1058 upstream. 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. Fixes: ef0eebc05130 ("drivers/pinctrl: Add the concept of an "init" state") Reported-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- drivers/pinctrl/sh-pfc/core.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) -- 2.7.4