The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 5223c511eb4f919e6b423b2f66e02674e97e77e3 Mon Sep 17 00:00:00 2001
From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
Date: Wed, 11 May 2022 10:40:57 +0100
Subject: [PATCH] pinctrl: renesas: rzg2l: Return -EINVAL for pins which have
input disabled
Pin status reported by pinconf-pins file always reported pin status as
"input enabled" even for pins which had input disabled. Fix this by
returning -EINVAL for the pins which have input disabled.
Fixes: c4c4637eb57f2 ("pinctrl: renesas: Add RZ/G2L pin and gpio controller driver")
Reported-by: Phil Edworthy <phil.edworthy@xxxxxxxxxxx>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
Reviewed-by: Phil Edworthy <phil.edworthy@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220511094057.3151-1-prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index a48cac55152c..c3cdf52b7294 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -517,6 +517,8 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
if (!(cfg & PIN_CFG_IEN))
return -EINVAL;
arg = rzg2l_read_pin_config(pctrl, IEN(port_offset), bit, IEN_MASK);
+ if (!arg)
+ return -EINVAL;
break;
case PIN_CONFIG_POWER_SOURCE: {
