at86rf230: fix at86rf230_read_subreg succeed handling
authorAlexander Aring <alex.aring@gmail.com>
Tue, 17 Mar 2015 09:32:39 +0000 (10:32 +0100)
committerMarcel Holtmann <marcel@holtmann.org>
Tue, 17 Mar 2015 15:30:57 +0000 (16:30 +0100)
commitd907c4f05cc7cb18d0f41f23cadf7f8ec10bfd29
treec1cdf66d8d336f1717c191b2566586b330f4def0
parentc9e44474f27e251fcdc1b52d7bd0a7607af4473a
at86rf230: fix at86rf230_read_subreg succeed handling

This patch fix an issue when at86rf230_read_subreg was successful. The
function at86rf230_read_subreg will directly call regmap_read which
returns zero on successful. Nobody figured out issues yet because it was
only necessary to evaluate dvdd state while probing. This could make
trouble because the stack variable could have an random value.

The function is also used by reset the irq line before requesting irq, but
the value isn't evaluated afterwards.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
drivers/net/ieee802154/at86rf230.c