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iio: ak8975: fix maybe-uninitialized warning
authorRichard Leitner <dev@g0hl1n.net>
Tue, 5 Apr 2016 13:03:48 +0000 (15:03 +0200)
committerJonathan Cameron <jic23@kernel.org>
Sun, 17 Apr 2016 11:16:36 +0000 (12:16 +0100)
commit05be8d4101d960bad271d32b4f6096af1ccb1534
tree49d3ff2dcee32ea5e06b3adea30d221109a12a5a
parent07d2390e36ee5b3265e9cc8305f2a106c8721e16
iio: ak8975: fix maybe-uninitialized warning

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>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
drivers/iio/magnetometer/ak8975.c