linux-kernel - Re: [PATCH] Input: Remove dev_err

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Message-ID: <f6cioxjpfmre4vcru7b3m45cu6axdgpzx6b2qjfggl3r73nbm3@cst5hw7bg75e>
Date: Thu, 21 Aug 2025 19:48:13 -0700
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
To: Xichao Zhao <zhao.xichao@...o.com>
Cc: heiko@...ech.de, linux-input@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Input: Remove dev_err_probe() if error is -ENOMEM

Hi Xichao,

On Thu, Aug 21, 2025 at 05:47:51PM +0800, Xichao Zhao wrote:
> 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.
> 
> Signed-off-by: Xichao Zhao <zhao.xichao@...o.com>
> ---
>  drivers/input/misc/qnap-mcu-input.c   | 2 +-
>  drivers/input/touchscreen/zforce_ts.c | 3 +--

Please split per-driver.

>  2 files changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/input/misc/qnap-mcu-input.c b/drivers/input/misc/qnap-mcu-input.c
> index 76e62f0816c1..3be899bfc114 100644
> --- a/drivers/input/misc/qnap-mcu-input.c
> +++ b/drivers/input/misc/qnap-mcu-input.c
> @@ -103,7 +103,7 @@ static int qnap_mcu_input_probe(struct platform_device *pdev)
>  
>  	input = devm_input_allocate_device(dev);
>  	if (!input)
> -		return dev_err_probe(dev, -ENOMEM, "no memory for input device\n");
> +		return -ENOMEM;
>  
>  	idev->input = input;
>  	idev->dev = dev;
> diff --git a/drivers/input/touchscreen/zforce_ts.c b/drivers/input/touchscreen/zforce_ts.c
> index df42fdf36ae3..a360749fa076 100644
> --- a/drivers/input/touchscreen/zforce_ts.c
> +++ b/drivers/input/touchscreen/zforce_ts.c
> @@ -747,8 +747,7 @@ static int zforce_probe(struct i2c_client *client)
>  
>  	input_dev = devm_input_allocate_device(&client->dev);
>  	if (!input_dev)
> -		return dev_err_probe(&client->dev, -ENOMEM,
> -				     "could not allocate input device\n");
> +		return -ENOMEM;
>  
>  	ts->client = client;
>  	ts->input = input_dev;

Thanks.

-- 
Dmitry