linux-kernel - [PATCH 3/3] gpiolib: fix gpio_do_set

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Message-Id: <20200203133026.22930-4-brgl@bgdev.pl>
Date:   Mon,  3 Feb 2020 14:30:26 +0100
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Kent Gibson <warthog618@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: [PATCH 3/3] gpiolib: fix gpio_do_set_config()

From: Bartosz Golaszewski <bgolaszewski@...libre.com>

Commit d90f36851d65 ("gpiolib: have a single place of calling
set_config()") introduced a regression where we don't pass the right
variable as argument to the set_config() callback of gpio driver from
gpio_set_config(). After reverting two additional patches that came
on top of it - this addresses the issue by changing the type of the last
argument of gpio_do_set_config() to unsigned long and making sure the
packed config variable is actually used in gpio_set_config().

Fixes: d90f36851d65 ("gpiolib: have a single place of calling set_config()")
Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
---
 drivers/gpio/gpiolib.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 13982056c14e..760ae0707c01 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -3036,12 +3036,12 @@ EXPORT_SYMBOL_GPL(gpiochip_free_own_desc);
  */
 
 static int gpio_do_set_config(struct gpio_chip *gc, unsigned int offset,
-			      enum pin_config_param mode)
+			      unsigned long config)
 {
 	if (!gc->set_config)
 		return -ENOTSUPP;
 
-	return gc->set_config(gc, offset, mode);
+	return gc->set_config(gc, offset, config);
 }
 
 static int gpio_set_config(struct gpio_chip *gc, unsigned int offset,
@@ -3062,7 +3062,7 @@ static int gpio_set_config(struct gpio_chip *gc, unsigned int offset,
 	}
 
 	config = PIN_CONF_PACKED(mode, arg);
-	return gpio_do_set_config(gc, offset, mode);
+	return gpio_do_set_config(gc, offset, config);
 }
 
 static int gpio_set_bias(struct gpio_chip *chip, struct gpio_desc *desc)
-- 
2.23.0