Subject: [PATCH v2 06/10] mfd: tps65910: Use the standard DT property system-power-controller

From: [email-masked] (Felipe Balbi)
Date: Mon, 27 Oct 2014 11:41:53 -0500

On Mon, Oct 27, 2014 at 05:35:49PM +0100, Lucas Stach wrote:
> Am Montag, den 27.10.2014, 16:26 +0000 schrieb Romain Perier:
> > No longer use custom property to define poweroff capability, use the standard
> > DT property instead.
> > 
> > Signed-off-by: Romain Perier <[email-masked]>
> > ---
> >  drivers/mfd/tps65910.c | 3 +--
> >  1 file changed, 1 insertion(+), 2 deletions(-)
> > 
> > diff --git a/drivers/mfd/tps65910.c b/drivers/mfd/tps65910.c
> > index 7612d89..a7faff2 100644
> > --- a/drivers/mfd/tps65910.c
> > +++ b/drivers/mfd/tps65910.c
> > @@ -423,8 +423,7 @@ static struct tps65910_board *tps65910_parse_dt(struct i2c_client *client,
> >  
> >  	board_info->irq = client->irq;
> >  	board_info->irq_base = -1;
> > -	board_info->pm_off = of_property_read_bool(np,
> > -			"ti,system-power-controller");
> > +	board_info->pm_off = of_is_system_power_controller();
> >  
> >  	return board_info;
> >  }
> You are breaking compatibility with older DTs here. This is not
> acceptable.
> 
> You may change all in-tree DTs to use the new property and also patch
> the driver to understand it, but you must make sure that the driver
> still understands the old, custom property. And especially in this case
> it isn't really hard to do.

correct, it should be simple to hide that under
of_is_system_power_controller() itself.

-- 
balbi
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