Hi Vivek,
On Fri, 2017-03-10 at 20:10 +0530, Vivek Gautam wrote:
> Hi Philipp,
>
>
> On Wed, Feb 22, 2017 at 10:54 AM, Vivek Gautam
> <vivek.gautam@xxxxxxxxxxxxxx> wrote:
> > Count number of reset phandles available with the device node
> > to know the resets a given device has.
> >
> > Cc: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
> > Signed-off-by: Vivek Gautam <vivek.gautam@xxxxxxxxxxxxxx>
> > ---
>
> Any thoughts on this change?
> A small addition that seems useful.
Sorry I missed this one earlier.
> >
> > Based on torvald's master branch.
> >
> > include/linux/reset.h | 16 ++++++++++++++++
> > 1 file changed, 16 insertions(+)
> >
> > diff --git a/include/linux/reset.h b/include/linux/reset.h
> > index 5daff15722d3..88f63a640153 100644
> > --- a/include/linux/reset.h
> > +++ b/include/linux/reset.h
> > @@ -2,6 +2,7 @@
> > #define _LINUX_RESET_H_
> >
> > #include <linux/device.h>
> > +#include <linux/of.h>
> >
> > struct reset_control;
> >
> > @@ -234,6 +235,21 @@ static inline struct reset_control *of_reset_control_get_shared_by_index(
> > }
> >
> > /**
> > + * of_reset_control_get_count - Count number of resets available with a device
> > + * @node: device to be reset by the controller
> > + */
> > +static inline unsigned int of_reset_control_get_count(struct device_node *node)
> > +{
> > + int count;
> > +
> > + count = of_count_phandle_with_args(node, "resets", "#reset-cells");
> > + if (count < 0)
> > + return 0;
Please don't silently ignore errors. gpiod_count doesn't ignore errors
either. tegra_powergate_of_resets in drivers/soc/tegra/pmc.c open codes
this, too. This should be changed so it can be used there, too.
regards
Philipp
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