i2c_transfer returns number of sucessfully transfered messages. Change
error checking to accordingly. (ds1337_set_datetime never returned
sucess)
Signed-off-by: NLadislav Michl <ladis@linux-mips.org>
Signed-off-by: NJames Chapman <jchapman@katalix.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>