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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2015-08-18 12:16:33 +0300 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2015-08-31 18:29:52 +0300 |
| commit | 7d87b3c5c8602df4ce6d615b33ae6dc15438fa29 (patch) | |
| tree | bef0bea1b20eaf2bb7818db6f0ec3443bb4b409f /drivers/iio/light/tsl4531.c | |
| parent | aff268cd532e99ced3c8f48d01118912eb002bbf (diff) | |
| download | linux-7d87b3c5c8602df4ce6d615b33ae6dc15438fa29.tar.xz | |
iio: tsl4531: fix error handling in tsl4531_check_id()
The tsl4531_check_id() function returned 1 on "found" and 0 on "not
found" and negative error codes on failure. This was non-standard and
bug prone. The caller treated all non-zero values including error codes
as "found".
This patch fixes it by changing the tsl4531_check_id() to return zero on
success or a negative error code, and updates the caller.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio/light/tsl4531.c')
| -rw-r--r-- | drivers/iio/light/tsl4531.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/iio/light/tsl4531.c b/drivers/iio/light/tsl4531.c index 26979183d27c..cf94ec72b181 100644 --- a/drivers/iio/light/tsl4531.c +++ b/drivers/iio/light/tsl4531.c @@ -158,9 +158,9 @@ static int tsl4531_check_id(struct i2c_client *client) case TSL45313_ID: case TSL45315_ID: case TSL45317_ID: - return 1; - default: return 0; + default: + return -ENODEV; } } @@ -180,9 +180,10 @@ static int tsl4531_probe(struct i2c_client *client, data->client = client; mutex_init(&data->lock); - if (!tsl4531_check_id(client)) { + ret = tsl4531_check_id(client); + if (ret) { dev_err(&client->dev, "no TSL4531 sensor\n"); - return -ENODEV; + return ret; } ret = i2c_smbus_write_byte_data(data->client, TSL4531_CONTROL, |