lkml.org 
[lkml]   [2024]   [May]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v1 1/1] gpiolib: Return label, if set, for IRQ only line
Date
If line has been locked as IRQ without requesting,
still check its label and return it, if not NULL.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/gpio/gpiolib.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index db536ec9734d..1f1673552767 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -105,16 +105,16 @@ 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->srcu,
srcu_read_lock_held(&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;
}

--
2.43.0.rc1.1336.g36b5255a03ac

\
 
 \ /
  Last update: 2024-05-08 16:48    [W:0.037 / U:0.076 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site