This is a note to let you know that I've just added the patch titled
pinctrl: mediatek: Fix fallback behavior for bias_set_combo
to the 5.4-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-mediatek-fix-fallback-behavior-for-bias_set_combo.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 798a315fc359aa6dbe48e09d802aa59b7e158ffc Mon Sep 17 00:00:00 2001
From: Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx>
Date: Thu, 1 Jul 2021 16:09:55 +0800
Subject: pinctrl: mediatek: Fix fallback behavior for bias_set_combo
From: Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx>
commit 798a315fc359aa6dbe48e09d802aa59b7e158ffc upstream.
Some pin doesn't support PUPD register, if it fails and fallbacks with
bias_set_combo case, it will call mtk_pinconf_bias_set_pupd_r1_r0() to
modify the PUPD pin again.
Since the general bias set are either PU/PD or PULLSEL/PULLEN, try
bias_set or bias_set_rev1 for the other fallback case. If the pin
doesn't support neither PU/PD nor PULLSEL/PULLEN, it will return
-ENOTSUPP.
Fixes: 81bd1579b43e ("pinctrl: mediatek: Fix fallback call path")
Signed-off-by: Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx>
Reviewed-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx>
Reviewed-by: Zhiyong Tao <zhiyong.tao@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210701080955.2660294-1-hsinyi@xxxxxxxxxxxx
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
@@ -877,12 +877,10 @@ int mtk_pinconf_adv_pull_set(struct mtk_
err = hw->soc->bias_set(hw, desc, pullup);
if (err)
return err;
- } else if (hw->soc->bias_set_combo) {
- err = hw->soc->bias_set_combo(hw, desc, pullup, arg);
- if (err)
- return err;
} else {
- return -ENOTSUPP;
+ err = mtk_pinconf_bias_set_rev1(hw, desc, pullup);
+ if (err)
+ err = mtk_pinconf_bias_set(hw, desc, pullup);
}
}
Patches currently in stable-queue which might be from hsinyi@xxxxxxxxxxxx are
queue-5.4/pinctrl-mediatek-fix-fallback-behavior-for-bias_set_combo.patch
queue-5.4/pinctrl-mediatek-fix-fallback-call-path.patch
