linux-next oops in windfarm startup

[Hugh Dickins]

On Tue, 8 May 2012, Benjamin Herrenschmidt wrote:
> On Mon, 2012-05-07 at 08:57 -0700, Hugh Dickins wrote:
> > Hi Ben,
> > 
> > 3.4.0-rc5-next-20120504 and 3.4.0-rc6-next-20120507
> > crash while booting the PowerMac G5: I have to revert
> > your commit e326b30fda9985a2e7fda6fb9212b86bf025c39
> > powerpc/pmac: Convert windfarm_smu_sat to new i2c probing
> > to get a working system.
> 
> Argh, stoopid me ... and I thought I had tested it .... just
> on the wrong machine. Oh well try this and let me know:
> 
> powerpc/windfarm: Fix crash on SMU based machine after i2c conversion
> 
> We no longer get the device node in platform_data but instead
> where it belongs in struct device, so get it from there instead
> of blowing up.
> 
> Signed-off-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>

Yep, that fixes it for me: thanks a lot!

Hugh

> ---
> 
> diff --git a/drivers/macintosh/windfarm_smu_sat.c b/drivers/macintosh/windfarm_smu_sat.c
> index e2989ce..426e810 100644
> --- a/drivers/macintosh/windfarm_smu_sat.c
> +++ b/drivers/macintosh/windfarm_smu_sat.c
> @@ -204,7 +204,7 @@ static struct wf_sensor_ops wf_sat_ops = {
>  static int wf_sat_probe(struct i2c_client *client,
>  			const struct i2c_device_id *id)
>  {
> -	struct device_node *dev = client->dev.platform_data;
> +	struct device_node *dev = client->dev.of_node;
>  	struct wf_sat *sat;
>  	struct wf_sat_sensor *sens;
>  	const u32 *reg;