linux-kernel - Re: [PATCH v2] Bluetooth: qca: set power_ctrl_enabled on NULL returned by gpiod_get

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Message-ID: <0f8ba1b5-490e-4961-80e2-7942f66730ec@linaro.org>
Date: Wed, 24 Apr 2024 16:46:34 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Bartosz Golaszewski <brgl@...ev.pl>, Marcel Holtmann
 <marcel@...tmann.org>, Luiz Augusto von Dentz <luiz.dentz@...il.com>
Cc: linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
 Wren Turkal <wt@...guintechs.org>, Zijun Hu <quic_zijuhu@...cinc.com>
Subject: Re: [PATCH v2] Bluetooth: qca: set power_ctrl_enabled on NULL
 returned by gpiod_get_optional()

On 24/04/2024 14:29, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> 

>  		qcadev->susclk = devm_clk_get_optional(&serdev->dev, NULL);
>  		if (IS_ERR(qcadev->susclk)) {
> @@ -2355,10 +2360,13 @@ static int qca_serdev_probe(struct serdev_device *serdev)
>  		qcadev->bt_en = devm_gpiod_get_optional(&serdev->dev, "enable",
>  					       GPIOD_OUT_LOW);
>  		if (IS_ERR(qcadev->bt_en)) {
> -			dev_warn(&serdev->dev, "failed to acquire enable gpio\n");
> -			power_ctrl_enabled = false;
> +			dev_err(&serdev->dev, "failed to acquire enable gpio\n");
> +			return PTR_ERR(qcadev->bt_en);
>  		}
>  
> +		if (!qcadev->bt_en)
> +			power_ctrl_enabled = false;

This looks duplicated - you already have such check earlier.

Best regards,
Krzysztof