linux-kernel - Re: [PATCH 1/2] i2c: consider devices with of_match

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Message-ID: <20200826105426.GJ1891694@smile.fi.intel.com>
Date:   Wed, 26 Aug 2020 13:54:26 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Cc:     Wolfram Sang <wsa@...nel.org>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        linux-i2c@...r.kernel.org, linux-acpi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] i2c: consider devices with of_match_table during i2c
 device probing

On Wed, Aug 26, 2020 at 07:38:07PM +0900, Sergey Senozhatsky wrote:
> On (20/08/26 19:24), Sergey Senozhatsky wrote:
> > > But then the question is why we have this code in the ->probe() at all?
> > > ->match() is run before probe by bus core, no?
> > 
> > That's a good question.
> 
> Everything seem to be working OK on my test board with this patch:

I'm okay with it, but I want to hear Wolfram about this.
If it gets a green light to go, feel free to add
Reviewed-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

> ---
> 
> diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c
> index 5ec082e2039d..77eea5c0bc71 100644
> --- a/drivers/i2c/i2c-core-base.c
> +++ b/drivers/i2c/i2c-core-base.c
> @@ -475,17 +475,6 @@ static int i2c_device_probe(struct device *dev)
>  
>  	driver = to_i2c_driver(dev->driver);
>  
> -	/*
> -	 * An I2C ID table is not mandatory, if and only if, a suitable OF
> -	 * or ACPI ID table is supplied for the probing device.
> -	 */
> -	if (!driver->id_table &&
> -	    !acpi_driver_match_device(dev, dev->driver) &&
> -	    !i2c_of_match_device(dev->driver->of_match_table, client)) {
> -		status = -ENODEV;
> -		goto put_sync_adapter;
> -	}
> -
>  	if (client->flags & I2C_CLIENT_WAKE) {
>  		int wakeirq;
>  

-- 
With Best Regards,
Andy Shevchenko