From: Lars-Peter Clausen <lars@metafoo.de>
Date: Tue, 14 Mar 2023 02:31:46 -0700
Subject: [PATCH] hwmon: (ltc2992) Set `can_sleep` flag for GPIO chip
References: bsc#1012628
Patch-mainline: 6.2.8
Git-commit: ab00709310eedcd8dae0df1f66d332f9bc64c99e

[ Upstream commit ab00709310eedcd8dae0df1f66d332f9bc64c99e ]

The ltc2992 drivers uses a mutex and I2C bus access in its GPIO chip `set`
and `get` implementation. This means these functions can sleep and the GPIO
chip should set the `can_sleep` property to true.

This will ensure that a warning is printed when trying to set or get the
GPIO value from a context that potentially can't sleep.

Fixes: 9ca26df1ba25 ("hwmon: (ltc2992) Add support for GPIOs.")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20230314093146.2443845-2-lars@metafoo.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/hwmon/ltc2992.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/hwmon/ltc2992.c b/drivers/hwmon/ltc2992.c
index 88514152..69341de3 100644
--- a/drivers/hwmon/ltc2992.c
+++ b/drivers/hwmon/ltc2992.c
@@ -323,6 +323,7 @@ static int ltc2992_config_gpio(struct ltc2992_state *st)
 	st->gc.label = name;
 	st->gc.parent = &st->client->dev;
 	st->gc.owner = THIS_MODULE;
+	st->gc.can_sleep = true;
 	st->gc.base = -1;
 	st->gc.names = st->gpio_names;
 	st->gc.ngpio = ARRAY_SIZE(st->gpio_names);
-- 
2.35.3