linux-kernel - [PATCH 5.14 637/849] pinctrl: equilibrium: Fix function addition in multiple groups

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Date:   Mon, 15 Nov 2021 18:02:00 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Rahul Tanwar <rtanwar@...linear.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.14 637/849] pinctrl: equilibrium: Fix function addition in multiple groups

From: Rahul Tanwar <rtanwar@...linear.com>

[ Upstream commit 53b3947ddb7f309d1f611f8dc9bfd6ea9d699907 ]

Ignore the same function with multiple groups.
Fix a typo in error print.

Fixes: 1948d5c51dba ("pinctrl: Add pinmux & GPIO controller driver for a new SoC")
Signed-off-by: Rahul Tanwar <rtanwar@...linear.com>
Link: https://lore.kernel.org/r/20211020093815.20870-1-rtanwar@maxlinear.com
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/pinctrl/pinctrl-equilibrium.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/pinctrl/pinctrl-equilibrium.c b/drivers/pinctrl/pinctrl-equilibrium.c
index 38cc20fa9d5af..44e6973b2ea93 100644
--- a/drivers/pinctrl/pinctrl-equilibrium.c
+++ b/drivers/pinctrl/pinctrl-equilibrium.c
@@ -675,6 +675,11 @@ static int eqbr_build_functions(struct eqbr_pinctrl_drv_data *drvdata)
 		return ret;
 
 	for (i = 0; i < nr_funcs; i++) {
+
+		/* Ignore the same function with multiple groups */
+		if (funcs[i].name == NULL)
+			continue;
+
 		ret = pinmux_generic_add_function(drvdata->pctl_dev,
 						  funcs[i].name,
 						  funcs[i].groups,
@@ -815,7 +820,7 @@ static int pinctrl_reg(struct eqbr_pinctrl_drv_data *drvdata)
 
 	ret = eqbr_build_functions(drvdata);
 	if (ret) {
-		dev_err(dev, "Failed to build groups\n");
+		dev_err(dev, "Failed to build functions\n");
 		return ret;
 	}
 
-- 
2.33.0