linux-kernel - [PATCH v1 1/1] gpiolib: Show more info for interrupt only lines in debugfs

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Date: Fri, 10 May 2024 19:04:46 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	linux-gpio@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Bartosz Golaszewski <brgl@...ev.pl>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v1 1/1] gpiolib: Show more info for interrupt only lines in debugfs

Show more info for interrupt only lines in debugfs. It's useful
to monitor the lines that have been never requested as GPIOs,
but IRQs.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---

For the reference. May be applied together with
20240508144741.1270912-1-andriy.shevchenko@...ux.intel.com
as a precursor.

 drivers/gpio/gpiolib.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 1f1673552767..4cd7e05f3e5b 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -4801,11 +4801,11 @@ static void gpiolib_dbg_show(struct seq_file *s, struct gpio_device *gdev)
 
 	for_each_gpio_desc(gc, desc) {
 		guard(srcu)(&desc->srcu);
-		if (test_bit(FLAG_REQUESTED, &desc->flags)) {
+		is_irq = test_bit(FLAG_USED_AS_IRQ, &desc->flags);
+		if (is_irq || test_bit(FLAG_REQUESTED, &desc->flags)) {
 			gpiod_get_direction(desc);
 			is_out = test_bit(FLAG_IS_OUT, &desc->flags);
 			value = gpio_chip_get_value(gc, desc);
-			is_irq = test_bit(FLAG_USED_AS_IRQ, &desc->flags);
 			active_low = test_bit(FLAG_ACTIVE_LOW, &desc->flags);
 			seq_printf(s, " gpio-%-3u (%-20.20s|%-20.20s) %s %s %s%s\n",
 				   gpio, desc->name ?: "", gpiod_get_label(desc),
-- 
2.43.0.rc1.1336.g36b5255a03ac