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Commit d9a0134e authored by Oleksandr Kravchenko's avatar Oleksandr Kravchenko Committed by Jonathan Cameron
Browse files

iio: core: Avoid double minus in sysfs output 



This patch fixes the issue with double minus in output when
reading channels from sysfs for IIO_VAL_INT_PLUS_MICRO and
IIO_VAL_INT_PLUS_NANO cases. Until this patch if val and val2
both are negatives output string contains "--" before
digits. It is result of "-%d..." in sprintf() format.

Signed-off-by: default avatarOleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent be85697b

drivers/iio/industrialio-core.c

+2 −2
Original line number Diff line number Diff line
@@ -383,14 +383,14 @@ static ssize_t iio_read_channel_info(struct device *dev, 
		scale_db = true;

	case IIO_VAL_INT_PLUS_MICRO:

		if (val2 < 0)

			return sprintf(buf, "-%d.%06u%s\n", val, -val2,

			return sprintf(buf, "-%ld.%06u%s\n", abs(val), -val2,

				scale_db ? " dB" : "");

		else

			return sprintf(buf, "%d.%06u%s\n", val, val2,

				scale_db ? " dB" : "");

	case IIO_VAL_INT_PLUS_NANO:

		if (val2 < 0)

			return sprintf(buf, "-%d.%09u\n", val, -val2);

			return sprintf(buf, "-%ld.%09u\n", abs(val), -val2);

		else

			return sprintf(buf, "%d.%09u\n", val, val2);

	case IIO_VAL_FRACTIONAL: