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Commit ef8307a2 authored by Irina Tirdea's avatar Irina Tirdea Committed by Jonathan Cameron
Browse files

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: default avatarIrina Tirdea <irina.tirdea@intel.com>
Suggested-by: default avatarHartmut Knaack <knaack.h@gmx.de>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 334efd07

drivers/iio/accel/mma9553.c

+2 −1
Original line number Diff line number Diff line
@@ -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;