Re: [PATCH 13/18] i2c: rk3x: remove printout on handled timeouts

From: Dragan Simic <dsimic@manjaro.org>
To: Wolfram Sang <wsa+renesas@sang-engineering.com>
Cc: linux-i2c@vger.kernel.org, Heiko Stuebner <heiko@sntech.de>,
	Andi Shyti <andi.shyti@kernel.org>,
	linux-arm-kernel@lists.infradead.org,
	linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 13/18] i2c: rk3x: remove printout on handled timeouts
Date: Fri, 12 Apr 2024 23:12:44 +0200	[thread overview]
Message-ID: <4bcd397ec377a4932c34d62c85ef28ed@manjaro.org> (raw)
In-Reply-To: <20240410112418.6400-33-wsa+renesas@sang-engineering.com>

Hello Wolfram,

On 2024-04-10 13:24, Wolfram Sang wrote:
> I2C and SMBus timeouts are not something the user needs to be informed
> about on controller level. The client driver may know if that really is
> a problem and give more detailed information to the user. The 
> controller
> should just pass this information upwards. Remove the printout.

Maybe it would be good to turn it into a debug message, instead of
simply removing it?  Maybe not all client drivers handle it correctly,
in which case having an easy way for debugging would be beneficial.

> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
> ---
>  drivers/i2c/busses/i2c-rk3x.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/drivers/i2c/busses/i2c-rk3x.c 
> b/drivers/i2c/busses/i2c-rk3x.c
> index 086fdf262e7b..8c7367f289d3 100644
> --- a/drivers/i2c/busses/i2c-rk3x.c
> +++ b/drivers/i2c/busses/i2c-rk3x.c
> @@ -1106,9 +1106,6 @@ static int rk3x_i2c_xfer_common(struct 
> i2c_adapter *adap,
>  		spin_lock_irqsave(&i2c->lock, flags);
> 
>  		if (timeout == 0) {
> -			dev_err(i2c->dev, "timeout, ipd: 0x%02x, state: %d\n",
> -				i2c_readl(i2c, REG_IPD), i2c->state);
> -
>  			/* Force a STOP condition without interrupt */
>  			i2c_writel(i2c, 0, REG_IEN);
>  			val = i2c_readl(i2c, REG_CON) & REG_CON_TUNING_MASK;

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