From: Karl Beldan <karl.beldan-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Greg Ungerer <gerg-JBU5SbJe1FlAfugRpC6u6w@public.gmane.org>
Cc: broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [v3] spi: orion: support armada extended baud rates
Date: Wed, 15 Oct 2014 15:10:54 +0200 [thread overview]
Message-ID: <20141015131054.GA3243@gobelin> (raw)
In-Reply-To: <543C8460.1060508-JBU5SbJe1FlAfugRpC6u6w@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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next prev parent reply other threads:[~2014-10-15 13:10 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-28 13:24 [PATCH v3] spi: orion: support armada extended baud rates gerg-JBU5SbJe1FlAfugRpC6u6w
[not found] ` <1411910644-7174-1-git-send-email-gerg-JBU5SbJe1FlAfugRpC6u6w@public.gmane.org>
2014-10-01 18:22 ` Mark Brown
2014-10-11 14:52 ` [v3] " Karl Beldan
2014-10-13 12:48 ` Mark Brown
2014-10-14 2:03 ` Greg Ungerer
[not found] ` <543C8460.1060508-JBU5SbJe1FlAfugRpC6u6w@public.gmane.org>
2014-10-15 13:10 ` Karl Beldan [this message]
2014-10-17 4:53 ` Greg Ungerer
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