Re: [PATCH 1/3] Input: snvs_pwrkey - make use of dev_err_probe()
From: Frank Li
Date: Thu Mar 26 2026 - 15:52:10 EST
On Thu, Mar 26, 2026 at 06:39:38PM +0800, Joy Zou wrote:
> Add dev_err_probe() at return path of probe() to support users to
> identify issues easier.
>
> Signed-off-by: Joy Zou <joy.zou@xxxxxxx>
> ---
Reviewed-by: Frank Li <Frank.Li@xxxxxxx>
> drivers/input/keyboard/snvs_pwrkey.c | 40 ++++++++++++++----------------------
> 1 file changed, 15 insertions(+), 25 deletions(-)
>
> diff --git a/drivers/input/keyboard/snvs_pwrkey.c b/drivers/input/keyboard/snvs_pwrkey.c
> index 954055aaf6e29527f22f8129fd47ca17722e2bc9..836ab94c160615f4b0f645d9b9f85d54638c2624 100644
> --- a/drivers/input/keyboard/snvs_pwrkey.c
> +++ b/drivers/input/keyboard/snvs_pwrkey.c
> @@ -124,17 +124,15 @@ static int imx_snvs_pwrkey_probe(struct platform_device *pdev)
> /* Get SNVS register Page */
> np = pdev->dev.of_node;
> if (!np)
> - return -ENODEV;
> + return dev_err_probe(&pdev->dev, -ENODEV, "Device tree node not found\n");
>
> pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
> if (!pdata)
> return -ENOMEM;
>
> pdata->snvs = syscon_regmap_lookup_by_phandle(np, "regmap");
> - if (IS_ERR(pdata->snvs)) {
> - dev_err(&pdev->dev, "Can't get snvs syscon\n");
> - return PTR_ERR(pdata->snvs);
> - }
> + if (IS_ERR(pdata->snvs))
> + return dev_err_probe(&pdev->dev, PTR_ERR(pdata->snvs), "Can't get snvs syscon\n");
>
> if (of_property_read_u32(np, "linux,keycode", &pdata->keycode)) {
> pdata->keycode = KEY_POWER;
> @@ -142,16 +140,15 @@ static int imx_snvs_pwrkey_probe(struct platform_device *pdev)
> }
>
> clk = devm_clk_get_optional_enabled(&pdev->dev, NULL);
> - if (IS_ERR(clk)) {
> - dev_err(&pdev->dev, "Failed to get snvs clock (%pe)\n", clk);
> - return PTR_ERR(clk);
> - }
> + if (IS_ERR(clk))
> + return dev_err_probe(&pdev->dev, PTR_ERR(clk),
> + "Failed to get snvs clock (%pe)\n", clk);
>
> pdata->wakeup = of_property_read_bool(np, "wakeup-source");
>
> pdata->irq = platform_get_irq(pdev, 0);
> if (pdata->irq < 0)
> - return -EINVAL;
> + return dev_err_probe(&pdev->dev, -EINVAL, "Failed to get interrupt\n");
>
> error = of_property_read_u32(np, "power-off-time-sec", &val);
> if (!error) {
> @@ -165,9 +162,8 @@ static int imx_snvs_pwrkey_probe(struct platform_device *pdev)
> bpt = (val / 5) - 1;
> break;
> default:
> - dev_err(&pdev->dev,
> - "power-off-time-sec %d out of range\n", val);
> - return -EINVAL;
> + return dev_err_probe(&pdev->dev, -EINVAL,
> + "power-off-time-sec %d out of range\n", val);
> }
>
> regmap_update_bits(pdata->snvs, SNVS_LPCR_REG, SNVS_LPCR_BPT_MASK,
> @@ -198,10 +194,8 @@ static int imx_snvs_pwrkey_probe(struct platform_device *pdev)
>
> /* input customer action to cancel release timer */
> error = devm_add_action(&pdev->dev, imx_snvs_pwrkey_act, pdata);
> - if (error) {
> - dev_err(&pdev->dev, "failed to register remove action\n");
> - return error;
> - }
> + if (error)
> + return dev_err_probe(&pdev->dev, error, "failed to register remove action\n");
>
> pdata->input = input;
> platform_set_drvdata(pdev, pdata);
> @@ -209,16 +203,12 @@ static int imx_snvs_pwrkey_probe(struct platform_device *pdev)
> error = devm_request_irq(&pdev->dev, pdata->irq,
> imx_snvs_pwrkey_interrupt,
> 0, pdev->name, pdev);
> - if (error) {
> - dev_err(&pdev->dev, "interrupt not available.\n");
> - return error;
> - }
> + if (error)
> + return dev_err_probe(&pdev->dev, error, "interrupt not available.\n");
>
> error = input_register_device(input);
> - if (error < 0) {
> - dev_err(&pdev->dev, "failed to register input device\n");
> - return error;
> - }
> + if (error < 0)
> + return dev_err_probe(&pdev->dev, error, "failed to register input device\n");
>
> device_init_wakeup(&pdev->dev, pdata->wakeup);
> error = dev_pm_set_wake_irq(&pdev->dev, pdata->irq);
>
> --
> 2.37.1
>