This is a note to let you know that I've just added the patch titled pinctrl: sh-pfc: only use dummy states for non-DT platforms to the 4.5-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: pinctrl-sh-pfc-only-use-dummy-states-for-non-dt-platforms.patch and it can be found in the queue-4.5 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 0129801be4b87226bf502f18f5a9eabd356d1058 Mon Sep 17 00:00:00 2001 From: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> Date: Mon, 7 Mar 2016 19:40:57 +0100 Subject: pinctrl: sh-pfc: only use dummy states for non-DT platforms From: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> 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@xxxxxxxxx> Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> Acked-by: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx> Tested-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/pinctrl/sh-pfc/core.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/pinctrl/sh-pfc/core.c +++ b/drivers/pinctrl/sh-pfc/core.c @@ -545,7 +545,9 @@ static int sh_pfc_probe(struct platform_ 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) Patches currently in stable-queue which might be from wsa+renesas@xxxxxxxxxxxxxxxxxxxx are queue-4.5/sh_eth-fix-null-pointer-dereference-in-sh_eth_ring_format.patch queue-4.5/pinctrl-sh-pfc-only-use-dummy-states-for-non-dt-platforms.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html