diff options
| author | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2019-03-28 11:16:26 +0100 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2019-03-28 11:16:26 +0100 |
| commit | 6f01eb5bf8e8110ab5f3a8e7b0f3abf19a205e4b (patch) | |
| tree | 4b3147335ed97e4b487fd84bcb7a959a38d9656e /drivers/staging/iio/adc/ad7280a.c | |
| parent | 8f234193b8cc35c44614e4a4b05f2d920ff562e4 (diff) | |
| parent | 6b50202a4d53bf527c640467bcff68b50a5e38a2 (diff) | |
Merge tag 'v4.4.177' into toradex_vf_4.4-nextColibri-VF_LXDE-Image_2.8b6.183-20190331
This is the 4.4.177 stable release
Diffstat (limited to 'drivers/staging/iio/adc/ad7280a.c')
| -rw-r--r-- | drivers/staging/iio/adc/ad7280a.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/staging/iio/adc/ad7280a.c b/drivers/staging/iio/adc/ad7280a.c index 35acb1a4669b..db8390022732 100644 --- a/drivers/staging/iio/adc/ad7280a.c +++ b/drivers/staging/iio/adc/ad7280a.c @@ -250,7 +250,9 @@ static int ad7280_read(struct ad7280_state *st, unsigned devaddr, if (ret) return ret; - __ad7280_read32(st, &tmp); + ret = __ad7280_read32(st, &tmp); + if (ret) + return ret; if (ad7280_check_crc(st, tmp)) return -EIO; @@ -288,7 +290,9 @@ static int ad7280_read_channel(struct ad7280_state *st, unsigned devaddr, ad7280_delay(st); - __ad7280_read32(st, &tmp); + ret = __ad7280_read32(st, &tmp); + if (ret) + return ret; if (ad7280_check_crc(st, tmp)) return -EIO; @@ -321,7 +325,9 @@ static int ad7280_read_all_channels(struct ad7280_state *st, unsigned cnt, ad7280_delay(st); for (i = 0; i < cnt; i++) { - __ad7280_read32(st, &tmp); + ret = __ad7280_read32(st, &tmp); + if (ret) + return ret; if (ad7280_check_crc(st, tmp)) return -EIO; @@ -364,7 +370,10 @@ static int ad7280_chain_setup(struct ad7280_state *st) return ret; for (n = 0; n <= AD7280A_MAX_CHAIN; n++) { - __ad7280_read32(st, &val); + ret = __ad7280_read32(st, &val); + if (ret) + return ret; + if (val == 0) return n - 1; |