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| author | Richard Leitner <dev@g0hl1n.net> | 2016-04-05 15:03:48 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-05-11 11:21:23 +0200 |
| commit | 0f5c3afc750715fb644d9b234a7b05afb11dfe54 (patch) | |
| tree | 42707f6ceead2bd2ea30b0526f2161705c35b35d | |
| parent | d3cd04a8a94ab3fc02eef4f861aac0f494b2366e (diff) | |
| download | lwn-0f5c3afc750715fb644d9b234a7b05afb11dfe54.tar.gz lwn-0f5c3afc750715fb644d9b234a7b05afb11dfe54.zip | |
iio: ak8975: fix maybe-uninitialized warning
commit 05be8d4101d960bad271d32b4f6096af1ccb1534 upstream.
If i2c_device_id *id is NULL and acpi_match_device returns NULL too,
then chipset may be unitialized when accessing &ak_def_array[chipset] in
ak8975_probe. Therefore initialize chipset to AK_MAX_TYPE, which will
return an error when not changed.
This patch fixes the following maybe-uninitialized warning:
drivers/iio/magnetometer/ak8975.c: In function ‘ak8975_probe’:
drivers/iio/magnetometer/ak8975.c:788:14: warning: ‘chipset’ may be used
uninitialized in this function [-Wmaybe-uninitialized]
data->def = &ak_def_array[chipset];
Signed-off-by: Richard Leitner <dev@g0hl1n.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/iio/magnetometer/ak8975.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/magnetometer/ak8975.c b/drivers/iio/magnetometer/ak8975.c index fd780bbcd07e..f2a7f72f7aa6 100644 --- a/drivers/iio/magnetometer/ak8975.c +++ b/drivers/iio/magnetometer/ak8975.c @@ -732,7 +732,7 @@ static int ak8975_probe(struct i2c_client *client, int eoc_gpio; int err; const char *name = NULL; - enum asahi_compass_chipset chipset; + enum asahi_compass_chipset chipset = AK_MAX_TYPE; /* Grab and set up the supplied GPIO. */ if (client->dev.platform_data) |