]> git.ipfire.org Git - thirdparty/kernel/stable.git/commit
pinctrl: armada-37xx: set GPIO output value before setting direction
authorGabor Juhos <j4g8y7@gmail.com>
Wed, 14 May 2025 19:18:33 +0000 (21:18 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 27 Jun 2025 10:07:05 +0000 (11:07 +0100)
commita604f0b9049d050a976d97d8d43d8c6902175a27
treec46c42b7373b69b908620c88b2736de15bddcef9
parent91f3702fd9adf3342b25cdf315e896906fe63a3d
pinctrl: armada-37xx: set GPIO output value before setting direction

commit e6ebd4942981f8ad37189bbb36a3c8495e21ef4c upstream.

Changing the direction before updating the output value in the
OUTPUT_VAL register may result in a glitch on the output line
if the previous value in the OUTPUT_VAL register is different
from the one we want to set.

In order to avoid that, update the output value before changing
the direction.

Cc: stable@vger.kernel.org
Fixes: 6702abb3bf23 ("pinctrl: armada-37xx: Fix direction_output() callback behavior")
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Gabor Juhos <j4g8y7@gmail.com>
Link: https://lore.kernel.org/20250514-pinctrl-a37xx-fixes-v2-2-07e9ac1ab737@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/pinctrl/mvebu/pinctrl-armada-37xx.c