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gpiolib: Return label, if set, for IRQ only line

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If line has been locked as IRQ without requesting,
still check its label and return it, if not NULL.

Signed-off-by: Andy Shevchenko <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bartosz Golaszewski <[email protected]>
This commit is contained in:
Andy Shevchenko authored and Bartosz Golaszewski committed 2024-06-04 10:17:24 +02:00
1 parent ea95bd8510
commit 5a646e03e9
1 file changed
+6 -6
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drivers/gpio/gpiolib.c
+6 -6
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@@ -106,16 +106,16 @@ const char *gpiod_get_label(struct gpio_desc *desc)
unsigned long flags;
flags = READ_ONCE(desc->flags);
if (test_bit(FLAG_USED_AS_IRQ, &flags) &&
!test_bit(FLAG_REQUESTED, &flags))
return "interrupt";
if (!test_bit(FLAG_REQUESTED, &flags))
return NULL;
label = srcu_dereference_check(desc->label, &desc->gdev->desc_srcu,
srcu_read_lock_held(&desc->gdev->desc_srcu));
if (test_bit(FLAG_USED_AS_IRQ, &flags))
return label->str ?: "interrupt";
if (!test_bit(FLAG_REQUESTED, &flags))
return NULL;
return label->str;
}