diff options
| author | Alexander Sverdlin <alexander.sverdlin@siemens.com> | 2025-03-31 17:22:20 +0200 |
|---|---|---|
| committer | William Breathitt Gray <wbg@kernel.org> | 2025-05-02 22:46:01 +0900 |
| commit | 08e2a660b1601963ced37ac8e8d8c134a97f167e (patch) | |
| tree | a1764ad3437196befb753f8f935b0ce40aa234a6 | |
| parent | b4432656b36e5cc1d50a1f2dc15357543add530e (diff) | |
counter: interrupt-cnt: Convert atomic_t -> atomic_long_t
Convert the internal counter type to atomic_long_t, which:
- doesn't change much for existing in-tree users as they are 32-bit anyway
(stm32/i.MX6)
- doesn't introduce performace penalty on 32-bit platforms
- provides 64-bit resolution on 64-bit platforms with virtually no
preformance penalty
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Acked-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/r/20250331152222.2263776-1-alexander.sverdlin@siemens.com
Signed-off-by: William Breathitt Gray <wbg@kernel.org>
| -rw-r--r-- | drivers/counter/interrupt-cnt.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/counter/interrupt-cnt.c b/drivers/counter/interrupt-cnt.c index 949598d51575..8df5457b0a07 100644 --- a/drivers/counter/interrupt-cnt.c +++ b/drivers/counter/interrupt-cnt.c @@ -15,7 +15,7 @@ #define INTERRUPT_CNT_NAME "interrupt-cnt" struct interrupt_cnt_priv { - atomic_t count; + atomic_long_t count; struct gpio_desc *gpio; int irq; bool enabled; @@ -29,7 +29,7 @@ static irqreturn_t interrupt_cnt_isr(int irq, void *dev_id) struct counter_device *counter = dev_id; struct interrupt_cnt_priv *priv = counter_priv(counter); - atomic_inc(&priv->count); + atomic_long_inc(&priv->count); counter_push_event(counter, COUNTER_EVENT_CHANGE_OF_STATE, 0); @@ -89,7 +89,7 @@ static int interrupt_cnt_read(struct counter_device *counter, { struct interrupt_cnt_priv *priv = counter_priv(counter); - *val = atomic_read(&priv->count); + *val = atomic_long_read(&priv->count); return 0; } @@ -102,7 +102,7 @@ static int interrupt_cnt_write(struct counter_device *counter, if (val != (typeof(priv->count.counter))val) return -ERANGE; - atomic_set(&priv->count, val); + atomic_long_set(&priv->count, val); return 0; } |