Re: [PATCH 1/5] PM / devfreq: sun8i-a33-mbus: Simplify usage of clk_rate_exclusive_get()

From: Andre Przywara <andre.przywara@arm.com>
To: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
Cc: Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>,
	Russell King <linux@armlinux.org.uk>,
	linux-clk@vger.kernel.org,
	MyungJoo Ham <myungjoo.ham@samsung.com>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	Chanwoo Choi <cw00.choi@samsung.com>,
	Chen-Yu Tsai <wens@csie.org>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	Samuel Holland <samuel@sholland.org>,
	linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-sunxi@lists.linux.dev, kernel@pengutronix.de
Subject: Re: [PATCH 1/5] PM / devfreq: sun8i-a33-mbus: Simplify usage of clk_rate_exclusive_get()
Date: Tue, 12 Dec 2023 18:16:55 +0000	[thread overview]
Message-ID: <20231212181655.1a0d5971@donnerap.manchester.arm.com> (raw)
In-Reply-To: <5ef585a3d7bee42bac5be0e40efcfbc6e75adfff.1702400947.git.u.kleine-koenig@pengutronix.de>

On Tue, 12 Dec 2023 18:26:38 +0100
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> wrote:

> clk_rate_exclusive_get() returns 0 unconditionally. So remove error
> handling. This prepares making clk_rate_exclusive_get() return void.
> 
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

Looks alright to me:
Reviewed-by: Andre Przywara <andre.przywara@arm.com>

Cheers,
Andre

> ---
>  drivers/devfreq/sun8i-a33-mbus.c | 14 ++------------
>  1 file changed, 2 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/devfreq/sun8i-a33-mbus.c b/drivers/devfreq/sun8i-a33-mbus.c
> index 13d32213139f..bbc577556944 100644
> --- a/drivers/devfreq/sun8i-a33-mbus.c
> +++ b/drivers/devfreq/sun8i-a33-mbus.c
> @@ -381,18 +381,10 @@ static int sun8i_a33_mbus_probe(struct platform_device *pdev)
>  				     "failed to enable bus clock\n");
>  
>  	/* Lock the DRAM clock rate to keep priv->nominal_bw in sync. */
> -	ret = clk_rate_exclusive_get(priv->clk_dram);
> -	if (ret) {
> -		err = "failed to lock dram clock rate\n";
> -		goto err_disable_bus;
> -	}
> +	clk_rate_exclusive_get(priv->clk_dram);
>  
>  	/* Lock the MBUS clock rate to keep MBUS_TMR_PERIOD in sync. */
> -	ret = clk_rate_exclusive_get(priv->clk_mbus);
> -	if (ret) {
> -		err = "failed to lock mbus clock rate\n";
> -		goto err_unlock_dram;
> -	}
> +	clk_rate_exclusive_get(priv->clk_mbus);
>  
>  	priv->gov_data.upthreshold	= 10;
>  	priv->gov_data.downdifferential	=  5;
> @@ -450,9 +442,7 @@ static int sun8i_a33_mbus_probe(struct platform_device *pdev)
>  	dev_pm_opp_remove_all_dynamic(dev);
>  err_unlock_mbus:
>  	clk_rate_exclusive_put(priv->clk_mbus);
> -err_unlock_dram:
>  	clk_rate_exclusive_put(priv->clk_dram);
> -err_disable_bus:
>  	clk_disable_unprepare(priv->clk_bus);
>  
>  	return dev_err_probe(dev, ret, err);