]> www.infradead.org Git - users/hch/misc.git/commit
net: dsa: qca8k: fix illegal usage of GPIO
authorMichal Vokáč <michal.vokac@ysoft.com>
Fri, 26 Jan 2024 10:49:35 +0000 (11:49 +0100)
committerJakub Kicinski <kuba@kernel.org>
Tue, 30 Jan 2024 02:14:07 +0000 (18:14 -0800)
commitc44fc98f0a8ffd94fa0bd291928e7e312ffc7ca4
treea1611f08c91a34ec6b82846dfc18437be3544cf7
parent577e4432f3ac810049cb7e6b71f4d96ec7c6e894
net: dsa: qca8k: fix illegal usage of GPIO

When working with GPIO, its direction must be set either when the GPIO is
requested by gpiod_get*() or later on by one of the gpiod_direction_*()
functions. Neither of this is done here which results in undefined
behavior on some systems.

As the reset GPIO is used right after it is requested here, it makes sense
to configure it as GPIOD_OUT_HIGH right away. With that, the following
gpiod_set_value_cansleep(1) becomes redundant and can be safely
removed.

Fixes: a653f2f538f9 ("net: dsa: qca8k: introduce reset via gpio feature")
Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/1706266175-3408-1-git-send-email-michal.vokac@ysoft.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
drivers/net/dsa/qca/qca8k-8xxx.c