5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
commit ee1dfbdd8b4b6de85e96ae2059dc9c1bdb6b49b5 upstream.
In commit 6e86a1543c37 ("can: dev: provide optional GPIO based
termination support") GPIO based termination support was added.
For no particular reason that patch uses gpiod_set_value() to set the
GPIO. This leads to the following warning, if the systems uses a
sleeping GPIO, i.e. behind an I2C port expander:
| WARNING: CPU: 0 PID: 379 at /drivers/gpio/gpiolib.c:3496 gpiod_set_value+0x50/0x6c
| CPU: 0 UID: 0 PID: 379 Comm: ip Not tainted 6.11.0-20241016-1 #1 823affae360cc91126e4d316d7a614a8bf86236c
Replace gpiod_set_value() by gpiod_set_value_cansleep() to allow the
use of sleeping GPIOs.
Cc: Nicolai Buchwitz <nb@xxxxxxxxxxx>
Cc: Lino Sanfilippo <l.sanfilippo@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Reported-by: Leonard Göhrs <l.goehrs@xxxxxxxxxxxxxx>
Tested-by: Leonard Göhrs <l.goehrs@xxxxxxxxxxxxxx>
Fixes: 6e86a1543c37 ("can: dev: provide optional GPIO based termination support")
Link: https://patch.msgid.link/20241121-dev-fix-can_set_termination-v1-1-41fa6e29216d@xxxxxxxxxxxxxx
Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/can/dev/dev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/can/dev/dev.c
+++ b/drivers/net/can/dev/dev.c
@@ -409,7 +409,7 @@ static int can_set_termination(struct ne
else
set = 0;
- gpiod_set_value(priv->termination_gpio, set);
+ gpiod_set_value_cansleep(priv->termination_gpio, set);
return 0;
}
