[PATCH 04/10] gpio: stmpe: use gpiochip_dup_line_label()

Bartosz Golaszewski
2023-11-29T14:24:37Z

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

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---
drivers/gpio/gpio-stmpe.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-stmpe.c b/drivers/gpio/gpio-stmpe.c
index 27cc4da53565..6c5ee81d71b3 100644
--- a/drivers/gpio/gpio-stmpe.c
+++ b/drivers/gpio/gpio-stmpe.c
@@ -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;
--
2.40.1