linux-kernel - Re: [PATCH 2/3] i2c: pxa: Add check for clk_enable() and clk_prepare

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Message-ID: <pyutqiut5yascxkwrv5ozrwdbmb4k4n2vu5jiia3fpgkra4up2@u7nvqpdscb4n>
Date: Tue, 5 Nov 2024 15:13:00 +0100
From: Andi Shyti <andi.shyti@...nel.org>
To: Jiasheng Jiang <jiashengjiangcool@...il.com>
Cc: rmk@...-67.arm.linux.org.uk, max.schwarz@...ine.de, 
	dianders@...omium.org, david.wu@...k-chips.com, heiko@...ech.de, vz@...ia.com, 
	wsa@...nel.org, manabian@...il.com, linux-arm-kernel@...ts.infradead.org, 
	linux-rockchip@...ts.infradead.org, linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] i2c: pxa: Add check for clk_enable() and
 clk_prepare_enable()

Hi Jiasheng,

On Mon, Nov 04, 2024 at 09:43:09PM +0000, Jiasheng Jiang wrote:
> Add check for the return values of clk_enable() and clk_prepare_enable()
> in order to catch the potential exceptions.
> 
> Fixes: e7d48fa2b5fb ("[I2C] pxa: provide late suspend and early resume hooks")
> Fixes: c3cef3f3c07b ("[ARM] pxa: update pxa i2c driver to use clk support")

I don't think we need the fixes tag here and nowhere else in this
series.

> Signed-off-by: Jiasheng Jiang <jiashengjiangcool@...il.com>
> ---
>  drivers/i2c/busses/i2c-pxa.c | 14 ++++++++++++--
>  1 file changed, 12 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
> index 4d76e71cdd4b..1118a7f5c6bf 100644
> --- a/drivers/i2c/busses/i2c-pxa.c
> +++ b/drivers/i2c/busses/i2c-pxa.c
> @@ -1503,7 +1503,11 @@ static int i2c_pxa_probe(struct platform_device *dev)
>  				i2c->adap.name);
>  	}
>  
> -	clk_prepare_enable(i2c->clk);
> +	ret = clk_prepare_enable(i2c->clk);
> +	if (ret) {
> +		dev_err(&dev->dev, "failed to enable clock: %d\n", ret);

please use dev_err_probe here.

Thanks for your patch.

Andi