We don't need the memory barriers here and an interrupt handler should
be as fast as possible. Therefore switch to readl_relaxed.
Signed-off-by: Heiner Kallweit <hkallweit1@xxxxxxxxx>
Reviewed-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
---
v2:
- added R-b
---
drivers/media/rc/meson-ir.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/media/rc/meson-ir.c b/drivers/media/rc/meson-ir.c
index cf8943d2..1c72593d 100644
--- a/drivers/media/rc/meson-ir.c
+++ b/drivers/media/rc/meson-ir.c
@@ -83,16 +83,17 @@ static void meson_ir_set_mask(struct meson_ir *ir, unsigned int reg,
static irqreturn_t meson_ir_irq(int irqno, void *dev_id)
{
struct meson_ir *ir = dev_id;
- u32 duration;
+ u32 duration, status;
DEFINE_IR_RAW_EVENT(rawir);
spin_lock(&ir->lock);
- duration = readl(ir->reg + IR_DEC_REG1);
+ duration = readl_relaxed(ir->reg + IR_DEC_REG1);
duration = FIELD_GET(REG1_TIME_IV_MASK, duration);
rawir.duration = US_TO_NS(duration * MESON_TRATE);
- rawir.pulse = !!(readl(ir->reg + IR_DEC_STATUS) & STATUS_IR_DEC_IN);
+ status = readl_relaxed(ir->reg + IR_DEC_STATUS);
+ rawir.pulse = !!(status & STATUS_IR_DEC_IN);
ir_raw_event_store_with_filter(ir->rc, &rawir);
ir_raw_event_handle(ir->rc);
--
2.12.2
