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path: root/drivers/iio/temperature/maxim_thermocouple.c
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Diffstat (limited to 'drivers/iio/temperature/maxim_thermocouple.c')
-rw-r--r--drivers/iio/temperature/maxim_thermocouple.c18
1 files changed, 11 insertions, 7 deletions
diff --git a/drivers/iio/temperature/maxim_thermocouple.c b/drivers/iio/temperature/maxim_thermocouple.c
index 39dd2026ccc9..f962f31a5eb2 100644
--- a/drivers/iio/temperature/maxim_thermocouple.c
+++ b/drivers/iio/temperature/maxim_thermocouple.c
@@ -123,22 +123,26 @@ static int maxim_thermocouple_read(struct maxim_thermocouple_data *data,
{
unsigned int storage_bytes = data->chip->read_size;
unsigned int shift = chan->scan_type.shift + (chan->address * 8);
- unsigned int buf;
+ __be16 buf16;
+ __be32 buf32;
int ret;
- ret = spi_read(data->spi, (void *) &buf, storage_bytes);
- if (ret)
- return ret;
-
switch (storage_bytes) {
case 2:
- *val = be16_to_cpu(buf);
+ ret = spi_read(data->spi, (void *)&buf16, storage_bytes);
+ *val = be16_to_cpu(buf16);
break;
case 4:
- *val = be32_to_cpu(buf);
+ ret = spi_read(data->spi, (void *)&buf32, storage_bytes);
+ *val = be32_to_cpu(buf32);
break;
+ default:
+ ret = -EINVAL;
}
+ if (ret)
+ return ret;
+
/* check to be sure this is a valid reading */
if (*val & data->chip->status_bit)
return -EINVAL;