regmap: irq: Only update mask bits when doing initial mask
Don't write the full register, it's possible there's bits other than the
masks in the same register which we shouldn't be changing.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Tested-by: Stephen Warren <swarren@wwwdotorg.org>
diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c
index c7e5b18..4a52743 100644
--- a/drivers/base/regmap/regmap-irq.c
+++ b/drivers/base/regmap/regmap-irq.c
@@ -306,7 +306,8 @@
d->mask_buf[i] = d->mask_buf_def[i];
reg = chip->mask_base +
(i * map->reg_stride * d->irq_reg_stride);
- ret = regmap_write(map, reg, d->mask_buf[i]);
+ ret = regmap_update_bits(map, reg,
+ d->mask_buf[i], d->mask_buf[i]);
if (ret != 0) {
dev_err(map->dev, "Failed to set masks in 0x%x: %d\n",
reg, ret);