linux-kernel - Re: [PATCH v2 3/3] phy: qcom-qmp: switch to explicit reset helpers

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Date:   Mon, 2 May 2022 06:02:31 -0700
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Johan Hovold <johan+linaro@...nel.org>
Cc:     Kishon Vijay Abraham I <kishon@...com>,
        Vinod Koul <vkoul@...nel.org>, Andy Gross <agross@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/3] phy: qcom-qmp: switch to explicit reset helpers

On Tue 26 Apr 23:32 PDT 2022, Johan Hovold wrote:

> Switch to consistently using the explicit reset-controller API which
> makes it clear that the reset controllers are used exclusively by the
> PHY driver.
> 
> Note that the deprecated of_reset_control_get() and
> devm_reset_control_get() are just transitional wrappers for the explicit
> API so there's no functional change.
> 
> Suggested-by: Philipp Zabel <p.zabel@...gutronix.de>
> Signed-off-by: Johan Hovold <johan+linaro@...nel.org>

Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>

> ---
>  drivers/phy/qualcomm/phy-qcom-qmp.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c
> index 3f77830921f5..160d723fc773 100644
> --- a/drivers/phy/qualcomm/phy-qcom-qmp.c
> +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
> @@ -5701,7 +5701,7 @@ static int qcom_qmp_phy_reset_init(struct device *dev, const struct qmp_phy_cfg
>  		struct reset_control *rst;
>  		const char *name = cfg->reset_list[i];
>  
> -		rst = devm_reset_control_get(dev, name);
> +		rst = devm_reset_control_get_exclusive(dev, name);
>  		if (IS_ERR(rst)) {
>  			dev_err(dev, "failed to get %s reset\n", name);
>  			return PTR_ERR(rst);
> @@ -6099,7 +6099,7 @@ int qcom_qmp_phy_create(struct device *dev, struct device_node *np, int id,
>  	/* Get lane reset, if any */
>  	if (cfg->has_lane_rst) {
>  		snprintf(prop_name, sizeof(prop_name), "lane%d", id);
> -		qphy->lane_rst = of_reset_control_get(np, prop_name);
> +		qphy->lane_rst = of_reset_control_get_exclusive(np, prop_name);
>  		if (IS_ERR(qphy->lane_rst)) {
>  			dev_err(dev, "failed to get lane%d reset\n", id);
>  			return PTR_ERR(qphy->lane_rst);
> -- 
> 2.35.1
>