From ef8307a21ac79823b8a4f977eac42329328af384 Mon Sep 17 00:00:00 2001 From: Irina Tirdea Date: Mon, 13 Apr 2015 18:40:59 +0300 Subject: [PATCH] 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 Suggested-by: Hartmut Knaack Signed-off-by: Jonathan Cameron --- drivers/iio/accel/mma9553.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) 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; -- 2.30.2