Re: [PATCH 12/15] SH: kill off set_irq_flags usage

Simon Horman
2015-07-07T01:55:10Z

On Tue, Jul 07, 2015 at 09:53:39AM +0900, Simon Horman wrote:
> On Tue, Jun 09, 2015 at 01:26:38PM -0500, Rob Herring wrote:
> > set_irq_flags is ARM specific with custom flags which have genirq
> > equivalents. Convert drivers to use the genirq interfaces directly, so we
> > can kill off set_irq_flags. The translation of flags is as follows:
> >
> > IRQF_VALID -> !IRQ_NOREQUEST
> > IRQF_PROBE -> !IRQ_NOPROBE
> > IRQF_NOAUTOEN -> IRQ_NOAUTOEN
> >
> > For IRQs managed by an irqdomain, the irqdomain core code handles clearing
> > and setting IRQ_NOREQUEST already, so there is no need to do this in
> > .map() functions and we can simply remove the set_irq_flags calls. Some
> > users also set IRQ_NOPROBE and this has been maintained although it is not
> > clear that is really needed. There appears to be a great deal of blind
> > copy and paste of this code.
> >
> > Signed-off-by: Rob Herring <robh@kernel.org>
> > Cc: Simon Horman <horms@verge.net.au>
> > Cc: Magnus Damm <magnus.damm@gmail.com>
> > Cc: linux-sh@vger.kernel.org
>
> I am trusting the description above coupled with the comments in
> the original code (that this patch removes). Assuming those ducks are
> aligned:
>
> Acked-by: Simon Horman <horms+renesas@verge.net.au>

As I usually take patches for drivers/sh/ (there have not been many of late)
please let me know if you would like me to pick up this change.

Also, a very minor nit, the prefix for patches to this file is usually
'sh:' rather than 'SH:'.

>
> > ---
> > drivers/sh/intc/internals.h | 10 +---------
> > 1 file changed, 1 insertion(+), 9 deletions(-)
> >
> > diff --git a/drivers/sh/intc/internals.h b/drivers/sh/intc/internals.h
> > index 7dff08e..897ffb1 100644
> > --- a/drivers/sh/intc/internals.h
> > +++ b/drivers/sh/intc/internals.h
> > @@ -99,15 +99,7 @@ static inline struct intc_desc_int *get_intc_desc(unsigned int irq)
> > */
> > static inline void activate_irq(int irq)
> > {
> > -#ifdef CONFIG_ARM
> > - /* ARM requires an extra step to clear IRQ_NOREQUEST, which it
> > - * sets on behalf of every irq_chip. Also sets IRQ_NOPROBE.
> > - */
> > - set_irq_flags(irq, IRQF_VALID);
> > -#else
> > - /* same effect on other architectures */
> > - irq_set_noprobe(irq);
> > -#endif
> > + irq_clear_status_flags(irq, IRQ_NOREQUEST | IRQ_NOPROBE);
> > }
> >
> > static inline int intc_handle_int_cmp(const void *a, const void *b)
> > --
> > 2.1.0
> >
> --
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