Re: [PATCH RESEND2 v4 2/2] drm/meson: dw-hdmi: Use devm_regulator_*get_enable*()

From: Neil Armstrong <neil.armstrong@linaro.org>
To: Matti Vaittinen <mazziesaccount@gmail.com>,
	Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Cc: David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>,
	Kevin Hilman <khilman@baylibre.com>,
	Jerome Brunet <jbrunet@baylibre.com>,
	Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
	Liam Girdwood <lgirdwood@gmail.com>,
	Mark Brown <broonie@kernel.org>,
	dri-devel@lists.freedesktop.org,
	linux-amlogic@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH RESEND2 v4 2/2] drm/meson: dw-hdmi: Use devm_regulator_*get_enable*()
Date: Thu, 1 Dec 2022 09:38:26 +0100	[thread overview]
Message-ID: <7b7a7e34-af6a-cb09-e094-e42e45f45b8b@linaro.org> (raw)
In-Reply-To: <df0096b5aea2a18d1540cde379c5abf589ccd7c4.1669799805.git.mazziesaccount@gmail.com>

On 30/11/2022 10:23, Matti Vaittinen wrote:
> Simplify using the devm_regulator_get_enable_optional(). Also drop the
> now unused struct member 'hdmi_supply'.
> 
> Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
> Martin Blumenstingl <martin.blumenstingl@googlemail.com>

Missing Acked-by, I'll add it while applying.

Neil

> 
> ---
> v4 resend 2:
> Respinning unchanged code with the commit title changed as wa suggested
> by Robert Foss and commit message changed as was suggested by Martin.
> 
> I am doing a clean-up for my local git and encountered this one.
> Respinning as it seems this one fell through the cracks.
> ---
>   drivers/gpu/drm/meson/meson_dw_hdmi.c | 23 +++--------------------
>   1 file changed, 3 insertions(+), 20 deletions(-)
> 
> diff --git a/drivers/gpu/drm/meson/meson_dw_hdmi.c b/drivers/gpu/drm/meson/meson_dw_hdmi.c
> index 5cd2b2ebbbd3..7642f740272b 100644
> --- a/drivers/gpu/drm/meson/meson_dw_hdmi.c
> +++ b/drivers/gpu/drm/meson/meson_dw_hdmi.c
> @@ -140,7 +140,6 @@ struct meson_dw_hdmi {
>   	struct reset_control *hdmitx_apb;
>   	struct reset_control *hdmitx_ctrl;
>   	struct reset_control *hdmitx_phy;
> -	struct regulator *hdmi_supply;
>   	u32 irq_stat;
>   	struct dw_hdmi *hdmi;
>   	struct drm_bridge *bridge;
> @@ -665,11 +664,6 @@ static void meson_dw_hdmi_init(struct meson_dw_hdmi *meson_dw_hdmi)
>   
>   }
>   
> -static void meson_disable_regulator(void *data)
> -{
> -	regulator_disable(data);
> -}
> -
>   static void meson_disable_clk(void *data)
>   {
>   	clk_disable_unprepare(data);
> @@ -723,20 +717,9 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
>   	meson_dw_hdmi->data = match;
>   	dw_plat_data = &meson_dw_hdmi->dw_plat_data;
>   
> -	meson_dw_hdmi->hdmi_supply = devm_regulator_get_optional(dev, "hdmi");
> -	if (IS_ERR(meson_dw_hdmi->hdmi_supply)) {
> -		if (PTR_ERR(meson_dw_hdmi->hdmi_supply) == -EPROBE_DEFER)
> -			return -EPROBE_DEFER;
> -		meson_dw_hdmi->hdmi_supply = NULL;
> -	} else {
> -		ret = regulator_enable(meson_dw_hdmi->hdmi_supply);
> -		if (ret)
> -			return ret;
> -		ret = devm_add_action_or_reset(dev, meson_disable_regulator,
> -					       meson_dw_hdmi->hdmi_supply);
> -		if (ret)
> -			return ret;
> -	}
> +	ret = devm_regulator_get_enable_optional(dev, "hdmi");
> +	if (ret != -ENODEV)
> +		return ret;
>   
>   	meson_dw_hdmi->hdmitx_apb = devm_reset_control_get_exclusive(dev,
>   						"hdmitx_apb");

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