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gpio: stmpe: use gpiochip_dup_line_label()

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Use the new gpiochip_dup_line_label() helper to safely retrieve the
descriptor label.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Bartosz Golaszewski 2023-12-04 10:35:03 +01:00
parent abeec1ad51
commit f1b33ce48a
1 changed files with 5 additions and 1 deletions
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6
drivers/gpio/gpio-stmpe.c
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@ -5,6 +5,7 @@
* Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
*/
#include <linux/cleanup.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
@ -255,7 +256,6 @@ static void stmpe_dbg_show_one(struct seq_file *s,
{
struct stmpe_gpio *stmpe_gpio = gpiochip_get_data(gc);
struct stmpe *stmpe = stmpe_gpio->stmpe;
const char *label = gpiochip_is_requested(gc, offset);
bool val = !!stmpe_gpio_get(gc, offset);
u8 bank = offset / 8;
u8 dir_reg = stmpe->regs[STMPE_IDX_GPDR_LSB + bank];
@ -263,6 +263,10 @@ static void stmpe_dbg_show_one(struct seq_file *s,
int ret;
u8 dir;
char *label __free(kfree) = gpiochip_dup_line_label(gc, offset);
if (IS_ERR(label))
return;
ret = stmpe_reg_read(stmpe, dir_reg);
if (ret < 0)
return;