hwmon: (ltc4282) remove the use of dev_err_probe()

[PATCH] hwmon: (ltc4282) remove the use of dev_err_probe()

Posted by Liao Yuanhong 1 month, 2 weeks ago

Logging messages that show some type of "out of memory" error are generally
unnecessary as there is a generic message and a stack dump done by the
memory subsystem. These messages generally increase kernel size without
much added value[1].

The dev_err_probe() doesn't do anything when error is '-ENOMEM'. Therefore,
remove the useless call to dev_err_probe(), and just return the value
instead.

[1]: https://lore.kernel.org/lkml/1402419340.30479.18.camel@joe-AO725/

Signed-off-by: Liao Yuanhong <liaoyuanhong@vivo.com>
---
 drivers/hwmon/ltc4282.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/hwmon/ltc4282.c b/drivers/hwmon/ltc4282.c
index dbb30abcd343..1d664a2d7b3c 100644
--- a/drivers/hwmon/ltc4282.c
+++ b/drivers/hwmon/ltc4282.c
@@ -1693,8 +1693,7 @@ static int ltc4282_probe(struct i2c_client *i2c)
 
 	st = devm_kzalloc(dev, sizeof(*st), GFP_KERNEL);
 	if (!st)
-		return dev_err_probe(dev, -ENOMEM,
-				     "Failed to allocate memory\n");
+		return -ENOMEM;
 
 	st->map = devm_regmap_init_i2c(i2c, &ltc4282_regmap_config);
 	if (IS_ERR(st->map))
-- 
2.34.1

Re: [PATCH] hwmon: (ltc4282) remove the use of dev_err_probe()

Posted by Guenter Roeck 1 month, 1 week ago

On Wed, Aug 20, 2025 at 09:15:08PM +0800, Liao Yuanhong wrote:
> Logging messages that show some type of "out of memory" error are generally
> unnecessary as there is a generic message and a stack dump done by the
> memory subsystem. These messages generally increase kernel size without
> much added value[1].
> 
> The dev_err_probe() doesn't do anything when error is '-ENOMEM'. Therefore,
> remove the useless call to dev_err_probe(), and just return the value
> instead.
> 
> [1]: https://lore.kernel.org/lkml/1402419340.30479.18.camel@joe-AO725/
> 
> Signed-off-by: Liao Yuanhong <liaoyuanhong@vivo.com>

Applied.

Guenter