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Message-Id: <20231129142411.76863-6-brgl@bgdev.pl>
Date: Wed, 29 Nov 2023 15:24:06 +0100
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Linus Walleij <linus.walleij@...aro.org>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH 05/10] pinctrl: abx500: use gpiochip_dup_line_label()
From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Use the new gpiochip_dup_line_label() helper to safely retrieve the
descriptor label.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
drivers/pinctrl/nomadik/pinctrl-abx500.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/pinctrl/nomadik/pinctrl-abx500.c b/drivers/pinctrl/nomadik/pinctrl-abx500.c
index d3c32d809bac..80e3ac333136 100644
--- a/drivers/pinctrl/nomadik/pinctrl-abx500.c
+++ b/drivers/pinctrl/nomadik/pinctrl-abx500.c
@@ -6,7 +6,9 @@
*
* Driver allows to use AxB5xx unused pins to be used as GPIO
*/
+
#include <linux/bitops.h>
+#include <linux/cleanup.h>
#include <linux/err.h>
#include <linux/gpio/driver.h>
#include <linux/init.h>
@@ -453,12 +455,11 @@ static void abx500_gpio_dbg_show_one(struct seq_file *s,
unsigned offset, unsigned gpio)
{
struct abx500_pinctrl *pct = pinctrl_dev_get_drvdata(pctldev);
- const char *label = gpiochip_is_requested(chip, offset - 1);
u8 gpio_offset = offset - 1;
int mode = -1;
bool is_out;
bool pd;
- int ret;
+ int ret = -ENOMEM;
const char *modes[] = {
[ABX500_DEFAULT] = "default",
@@ -474,6 +475,10 @@ static void abx500_gpio_dbg_show_one(struct seq_file *s,
[ABX500_GPIO_PULL_UP] = "pull up",
};
+ char *label __free(kfree) = gpiochip_dup_line_label(chip, offset - 1);
+ if (IS_ERR(label))
+ goto out;
+
ret = abx500_gpio_get_bit(chip, AB8500_GPIO_DIR1_REG,
gpio_offset, &is_out);
if (ret < 0)
--
2.40.1
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