*
*/
+#include <linux/cleanup.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/module.h>
for (i = 0; i < chip->ngpio; i++) {
int gpio = i + chip->base;
int reg;
- const char *label;
/* We report the GPIO even if it's not requested since
* we're also reporting things like alternate
* functions which apply even when the GPIO is not in
* use as a GPIO.
*/
- label = gpiochip_is_requested(chip, i);
- if (!label)
- label = "Unrequested";
+ char *label __free(kfree) = gpiochip_dup_line_label(chip, i);
+ if (IS_ERR(label)) {
+ dev_err(wm8994->dev, "Failed to duplicate label\n");
+ continue;
+ }
- seq_printf(s, " gpio-%-3d (%-20.20s) ", gpio, label);
+ seq_printf(s, " gpio-%-3d (%-20.20s) ", gpio,
+ label ?: "Unrequested");
reg = wm8994_reg_read(wm8994, WM8994_GPIO_1 + i);
if (reg < 0) {