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Subject[PATCH 1/2] regmap: irq: Factor register read out of the IRQ parsing loop
Date
In preparation for adding back support for block reads.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
---
drivers/base/regmap/regmap-irq.c | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c
index 9129493..329be98 100644
--- a/drivers/base/regmap/regmap-irq.c
+++ b/drivers/base/regmap/regmap-irq.c
@@ -170,13 +170,6 @@ static irqreturn_t regmap_irq_thread(int irq, void *d)
}
}

- /*
- * Ignore masked IRQs and ack if we need to; we ack early so
- * there is no race between handling and acknowleding the
- * interrupt. We assume that typically few of the interrupts
- * will fire simultaneously so don't worry about overhead from
- * doing a write per register.
- */
for (i = 0; i < data->chip->num_regs; i++) {
ret = regmap_read(map, chip->status_base + (i * map->reg_stride
* data->irq_reg_stride),
@@ -189,7 +182,16 @@ static irqreturn_t regmap_irq_thread(int irq, void *d)
pm_runtime_put(map->dev);
return IRQ_NONE;
}
+ }

+ /*
+ * Ignore masked IRQs and ack if we need to; we ack early so
+ * there is no race between handling and acknowleding the
+ * interrupt. We assume that typically few of the interrupts
+ * will fire simultaneously so don't worry about overhead from
+ * doing a write per register.
+ */
+ for (i = 0; i < data->chip->num_regs; i++) {
data->status_buf[i] &= ~data->mask_buf[i];

if (data->status_buf[i] && chip->ack_base) {
--
1.7.10.4


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