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 c7e5b18f4edc9484d65e62fc1c613e6dd1760a7d..4a52743b60cd89e04d5c3fc19ae6a580493f0f20 100644 (file)
--- a/drivers/base/regmap/regmap-irq.c
+++ b/drivers/base/regmap/regmap-irq.c
@@ -306,7 +306,8 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
                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);