diff options
| author | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2024-05-07 19:24:14 +0200 |
|---|---|---|
| committer | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2024-05-09 15:06:36 +0200 |
| commit | 7765ffed533d4a9f0291a0edc660496d104396ec (patch) | |
| tree | c17fbda465e4d1364feb36c5f4ebb87a40de0d5f /drivers/gpio/gpiolib-cdev.c | |
| parent | a86d27693066a34a29be86f394bbad847b2d1749 (diff) | |
gpiolib: use a single SRCU struct for all GPIO descriptors
We used a per-descriptor SRCU struct in order to not impose a wait with
synchronize_srcu() for descriptor X on read-only operations of
descriptor Y. Now that we no longer call synchronize_srcu() on
descriptor label change but only when releasing descriptor resources, we
can use a single SRCU structure for all GPIO descriptors in a given chip.
Suggested-by: "Paul E. McKenney" <paulmck@kernel.org>
Acked-by: "Paul E. McKenney" <paulmck@kernel.org>
Link: https://lore.kernel.org/r/20240507172414.28513-1-brgl@bgdev.pl
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Diffstat (limited to 'drivers/gpio/gpiolib-cdev.c')
| -rw-r--r-- | drivers/gpio/gpiolib-cdev.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpio/gpiolib-cdev.c b/drivers/gpio/gpiolib-cdev.c index d09c7d728365..fea149ae7774 100644 --- a/drivers/gpio/gpiolib-cdev.c +++ b/drivers/gpio/gpiolib-cdev.c @@ -2351,7 +2351,7 @@ static void gpio_desc_to_lineinfo(struct gpio_desc *desc, dflags = READ_ONCE(desc->flags); - scoped_guard(srcu, &desc->srcu) { + scoped_guard(srcu, &desc->gdev->desc_srcu) { label = gpiod_get_label(desc); if (label && test_bit(FLAG_REQUESTED, &dflags)) strscpy(info->consumer, label, |