[PATCH RFC 1/3] reset: replace boolean parameters with flags parameter
Uwe Kleine-König
u.kleine-koenig at baylibre.com
Wed Sep 25 07:25:41 PDT 2024
Hello Philipp,
On Wed, Jun 26, 2024 at 06:17:11PM +0200, Philipp Zabel wrote:
> On Sa, 2024-06-22 at 09:47 +0200, Uwe Kleine-König wrote:
> > On Fri, Jun 21, 2024 at 04:45:02PM +0200, Philipp Zabel wrote:
> > > @@ -999,8 +1001,9 @@ static struct reset_controller_dev *__reset_find_rcdev(const struct of_phandle_a
> > >
> > > struct reset_control *
> > > __of_reset_control_get(struct device_node *node, const char *id, int index,
> > > - bool shared, bool optional, bool acquired)
> > > + enum reset_control_flags flags)
> > > {
> > > + bool optional = flags & RESET_CONTROL_FLAGS_BIT_OPTIONAL;
> > > bool gpio_fallback = false;
> > > struct reset_control *rstc;
> > > struct reset_controller_dev *rcdev;
> > > @@ -1065,7 +1068,7 @@ __of_reset_control_get(struct device_node *node, const char *id, int index,
> > > }
> > >
> > > /* reset_list_mutex also protects the rcdev's reset_control list */
> > > - rstc = __reset_control_get_internal(rcdev, rstc_id, shared, acquired);
> > > + rstc = __reset_control_get_internal(rcdev, rstc_id, flags);
> >
> > If RESET_CONTROL_FLAGS_BIT_OPTIONAL was passed to
> > __of_reset_control_get(), you're forwarding it to
> > __reset_control_get_internal(). But the latter doesn't do anything with
> > that flag. I wonder if the API would be still less prone to error if
> > you'd filter out RESET_CONTROL_FLAGS_BIT_OPTIONAL before passing to
> > __reset_control_get_internal() and in __reset_control_get_internal() add
> > a check for unsupported flags.
>
> Yes, I'll do that. For every enum value with the optional bit set,
> there is a corresponding value without it.
Do you have this still on your todo list? I just review a pwm driver
that would benefit from devm_reset_control_get_exclusive_deasserted().
Best regards
Uwe
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 488 bytes
Desc: not available
URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20240925/f4c56486/attachment.sig>
More information about the linux-arm-kernel
mailing list