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| author | Michał Mirosław <mirq-linux@rere.qmqm.pl> | 2017-08-17 15:56:11 +0200 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2017-08-20 16:17:39 +0200 |
| commit | 9991f99eed49047c237e08471ce010cae02052fe (patch) | |
| tree | 5db4a22e71a37382806d5ddfc1a142c364477e27 /drivers/iio/magnetometer | |
| parent | iio: magnetometer: ak8974: add_device_randomness (serial number) (diff) | |
| download | linux-9991f99eed49047c237e08471ce010cae02052fe.tar.xz linux-9991f99eed49047c237e08471ce010cae02052fe.zip | |
iio: magnetometer: ak8974: mark INT_CLEAR as precious
Reading INT_CLEAR has side effects - disallow reading it via debugfs.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/magnetometer')
| -rw-r--r-- | drivers/iio/magnetometer/ak8974.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/iio/magnetometer/ak8974.c b/drivers/iio/magnetometer/ak8974.c index b1c209faf1b1..866f20b818b1 100644 --- a/drivers/iio/magnetometer/ak8974.c +++ b/drivers/iio/magnetometer/ak8974.c @@ -661,11 +661,17 @@ static bool ak8974_writeable_reg(struct device *dev, unsigned int reg) } } +static bool ak8974_precious_reg(struct device *dev, unsigned int reg) +{ + return reg == AK8974_INT_CLEAR; +} + static const struct regmap_config ak8974_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = 0xff, .writeable_reg = ak8974_writeable_reg, + .precious_reg = ak8974_precious_reg, }; static int ak8974_probe(struct i2c_client *i2c, |