diff options
| author |   Irina Tirdea <irina.tirdea@intel.com> | 2015-04-13 18:40:59 +0300 |
|---|---|---|
| committer |   Jonathan Cameron <jic23@kernel.org> | 2015-04-26 19:52:35 +0100 |
| commit | ef8307a21ac79823b8a4f977eac42329328af384 (patch) | |
| tree | 1527eee73eec7a8c9a61705f8392d90d6a141a76 /drivers/iio | |
| parent | iio: accel: mma9553: refactor mma9553_read_raw (diff) | |
| download | linux-dev-ef8307a21ac79823b8a4f977eac42329328af384.tar.xz linux-dev-ef8307a21ac79823b8a4f977eac42329328af384.zip | |
iio: accel: mma9553: fix gpio bitnum init value
Initial value of gpio bitnum is set to -1, but
the variable is declared as unsigned.
Use a positive invalid value for initial gpio
bitnum.
Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Suggested-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/accel/mma9553.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/iio/accel/mma9553.c b/drivers/iio/accel/mma9553.c index 032537fc2c56..9d649c4a21fd 100644 --- a/drivers/iio/accel/mma9553.c +++ b/drivers/iio/accel/mma9553.c @@ -77,6 +77,7 @@ /* Bitnum used for GPIO configuration = bit number in high status byte */ #define MMA9553_STATUS_TO_BITNUM(bit) (ffs(bit) - 9) +#define MMA9553_MAX_BITNUM MMA9553_STATUS_TO_BITNUM(BIT(16)) #define MMA9553_DEFAULT_SAMPLE_RATE 30 /* Hz */ @@ -406,8 +407,8 @@ static int mma9553_init(struct mma9553_data *data) } - data->gpio_bitnum = -1; /* Reset GPIO */ + data->gpio_bitnum = MMA9553_MAX_BITNUM; ret = mma9553_conf_gpio(data); if (ret < 0) return ret; |