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| author |   Alexandru Ardelean <alexandru.ardelean@analog.com> | 2019-11-01 11:34:58 +0200 |
|---|---|---|
| committer |   Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2019-11-03 10:22:39 +0000 |
| commit | c754a45455bb1ba759304128063c4325205f22fb (patch) | |
| tree | 131252cb4672f4b15feab4a079a3a77cbcf2a923 /drivers/iio | |
| parent | iio: imu: adis16400: check ret val for non-zero vs less-than-zero (diff) | |
| download | linux-dev-c754a45455bb1ba759304128063c4325205f22fb.tar.xz linux-dev-c754a45455bb1ba759304128063c4325205f22fb.zip | |
iio: imu: adis16460: check ret val for non-zero vs less-than-zero
The ADIS library functions return zero on success, and negative values for
error. Positive values aren't returned, but we only care about the success
value (which is zero).
This change is mostly needed so that the compiler won't make any inferences
about some about values being potentially un-initialized. This only
triggers after making some functions inline, because the compiler can
better follow return paths.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/imu/adis16460.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/iio/imu/adis16460.c b/drivers/iio/imu/adis16460.c index 6aed9e84abbf..b55812521537 100644 --- a/drivers/iio/imu/adis16460.c +++ b/drivers/iio/imu/adis16460.c @@ -80,7 +80,7 @@ static int adis16460_show_serial_number(void *arg, u64 *val) ret = adis_read_reg_16(&adis16460->adis, ADIS16460_REG_SERIAL_NUM, &serial); - if (ret < 0) + if (ret) return ret; *val = serial; @@ -98,7 +98,7 @@ static int adis16460_show_product_id(void *arg, u64 *val) ret = adis_read_reg_16(&adis16460->adis, ADIS16460_REG_PROD_ID, &prod_id); - if (ret < 0) + if (ret) return ret; *val = prod_id; @@ -116,7 +116,7 @@ static int adis16460_show_flash_count(void *arg, u64 *val) ret = adis_read_reg_32(&adis16460->adis, ADIS16460_REG_FLASH_CNT, &flash_count); - if (ret < 0) + if (ret) return ret; *val = flash_count; @@ -176,7 +176,7 @@ static int adis16460_get_freq(struct iio_dev *indio_dev, int *val, int *val2) unsigned int freq; ret = adis_read_reg_16(&st->adis, ADIS16460_REG_DEC_RATE, &t); - if (ret < 0) + if (ret) return ret; freq = 2048000 / (t + 1); |