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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: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Oleksandr Kravchenko 2013-07-22 12:16:00 +01:00 committed by Jonathan Cameron
parent be85697bfc
commit d9a0134e7a
1 changed files with 2 additions and 2 deletions
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4
drivers/iio/industrialio-core.c
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@ -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: