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regmap: irq: Only update mask bits when doing initial mask

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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>
This commit is contained in:
Mark Brown 2012-08-01 20:29:14 +01:00
parent 16032624f5
commit 0eb46ad0c8
1 changed files with 2 additions and 1 deletions
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3
drivers/base/regmap/regmap-irq.c
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@ -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);