Re: [v3] spi: orion: support armada extended baud rates

[Karl Beldan <karl.beldan-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

On Tue, Oct 14, 2014 at 12:03:12PM +1000, Greg Ungerer wrote:
> Hi Karl,
> 
> On 12/10/14 00:52, Karl Beldan wrote:
> > On 28/09/14 23:24:04, Greg Ungerer wrote:
> >> @@ -378,6 +452,10 @@ static int orion_spi_probe(struct platform_device *pdev)
> >>  	spi = spi_master_get_devdata(master);
> >>  	spi->master = master;
> >>  
> >> +	of_id = of_match_device(orion_spi_of_match_table, &pdev->dev);
> >> +	devdata = of_id->data;
> >> +	spi->devdata = devdata;
> >> +
> > Won't of_match_device return NULL on non-DT systems, and further
> > references oops ?
> 
> Yes, sure enough.
> 
> So I propose to fix with this change.
> 
> diff --git a/drivers/spi/spi-orion.c b/drivers/spi/spi-orion.c
> index acf8e48..c069ccd 100644
> --- a/drivers/spi/spi-orion.c
> +++ b/drivers/spi/spi-orion.c
> @@ -453,7 +453,7 @@ static int orion_spi_probe(struct platform_device *pdev)
>         spi->master = master;
>  
>         of_id = of_match_device(orion_spi_of_match_table, &pdev->dev);
> -       devdata = of_id->data;
> +       devdata = (of_id) ? of_id->data : &orion_spi_dev_data;
>         spi->devdata = devdata;
>  
I am not aware of the policy in the DT subsystem, I see some drivers
bailing out when not getting any match, some remove non-DT support and
add a dependency on OF, yet a message would feel appropriate.
Other than that ok, it should fix df59fa7f4bca.
 
Karl
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