linux-kernel - Re: [PATCH 2/3] spi: of: allow instantiating slaves without a driver

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Date:	Sun, 26 Jun 2016 02:15:00 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Michal Suchanek <hramrach@...il.com>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Ingo Molnar <mingo@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Kees Cook <keescook@...omium.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Dan Williams <dan.j.williams@...el.com>,
	Tejun Heo <tj@...nel.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Davidlohr Bueso <dave@...olabs.net>,
	Andrey Ryabinin <aryabinin@...tuozzo.com>,
	Nikolay Aleksandrov <nikolay@...ulusnetworks.com>,
	Dmitry Vyukov <dvyukov@...gle.com>,
	Adrien Schildknecht <adrien+dev@...ischi.me>,
	linux-kernel@...r.kernel.org, linux-spi@...r.kernel.org
Subject: Re: [PATCH 2/3] spi: of: allow instantiating slaves without a driver

On Thu, Jun 23, 2016 at 05:41:20PM -0000, Michal Suchanek wrote:
> SPI slave devices are not created when looking up driver for the slave
> fails. Create a device anyway so it can be manually bound to a driver.

> @@ -1543,11 +1542,10 @@ of_register_spi_device(struct spi_master *master, struct device_node *nc)
>  	/* Device speed */
>  	rc = of_property_read_u32(nc, "spi-max-frequency", &value);
>  	if (rc) {
> -		dev_err(&master->dev, "%s has no valid 'spi-max-frequency' property (%d)\n",
> +		dev_warn(&master->dev, "%s has no valid 'spi-max-frequency' property (%d)\n",
>  			nc->full_name, rc);
> -		goto err_out;
> -	}
> -	spi->max_speed_hz = value;
> +	} else
> +		spi->max_speed_hz = value;
>  

I can't relate this hunk to the changelog and there's a coding style
problem, if there's { } on one side of an if statement it should be on
both sides.  Why are we making this change?

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