> >> …
> >>> +++ b/drivers/irqchip/irq-aspeed-intc.c
> >>> @@ -0,0 +1,139 @@
> >> …
> >>> +static void aspeed_intc_ic_irq_handler(struct irq_desc *desc)
> >> +{
> >>> + struct aspeed_intc_ic *intc_ic = irq_desc_get_handler_data(desc);
> >>> + struct irq_chip *chip = irq_desc_get_chip(desc);
> >>> + unsigned long bit, status;
> >>
> >> I suggest to reduce the scopes for three local variables.
> > May I check the scopes of bit and status usage?
> > Variables of bit and status are used in for_each_set_bit.
> > How could I reduce the scopes?
>
> I propose to move selected variable definitions into corresponding compound
> statements (by using extra curly brackets).
> https://refactoring.com/catalog/reduceScopeOfVariable.html
OK. I moved these two local variables into scoped_guard.
+static void aspeed_intc_ic_irq_handler(struct irq_desc *desc)
+{
+ struct aspeed_intc_ic *intc_ic = irq_desc_get_handler_data(desc);
+
+ guard(chained_irq)(desc);
+ scoped_guard(raw_spinlock, &intc_ic->gic_lock) {
+ unsigned long bit, status;
+
+ status = readl(intc_ic->base + INTC_INT_STATUS_REG);
+ for_each_set_bit(bit, &status, IRQS_PER_WORD) {
+ generic_handle_domain_irq(intc_ic->irq_domain, bit);
+ writel(BIT(bit), intc_ic->base + INTC_INT_STATUS_REG);
+ }
+ }
+}
>
>
> >> Would you become interested to collaborate with another scoped guard
> >> for this programming interface?
> >> https://elixir.bootlin.com/linux/v6.12-rc2/source/include/linux/irqch
> >> ip/chained
> >> _irq.h#L13
> >
> > Maybe like the change in the following?
> >
> > diff --git a/drivers/irqchip/irq-aspeed-intc.c
> > b/drivers/irqchip/irq-aspeed-intc.c
> > index ef1c095ad09e..54d1881c56c6 100644
> > --- a/drivers/irqchip/irq-aspeed-intc.c
> > +++ b/drivers/irqchip/irq-aspeed-intc.c
> > @@ -32,7 +32,7 @@ static void aspeed_intc_ic_irq_handler(struct irq_desc
> *desc)
> > struct irq_chip *chip = irq_desc_get_chip(desc);
> > unsigned long bit, status;
> >
> > - chained_irq_enter(chip, desc);
> > + guard(chained_irq)(desc);
> >
> > scoped_guard(raw_spinlock, &intc_ic->gic_lock) {
> > status = readl(intc_ic->base + INTC_INT_STATUS_REG);
>
> Perhaps.
>
>
> > @@ -41,8 +41,6 @@ static void aspeed_intc_ic_irq_handler(struct irq_desc
> *desc)
> > writel(BIT(bit), intc_ic->base +
> INTC_INT_STATUS_REG);
> > }
> > }
> > -
> > - chained_irq_exit(chip, desc);
> > }
> …
>
> Probably, yes.
>
>
> …
> > +++ b/include/linux/irqchip/chained_irq.h
> > @@ -38,4 +38,5 @@ static inline void chained_irq_exit(struct irq_chip *chip,
> > chip->irq_unmask(&desc->irq_data);
> > }
> >
> > +DEFINE_GUARD (chained_irq, struct irq_desc * , chained_irq_exit ( _T
> > +->irq_data.chip, _T ), chained_irq_enter (_T->irq_data.chip, _T))
> …
>
> * Such a macro call looks promising.
> Would you like to omit any space characters before open parentheses?
OK. Fixed.
diff --git a/include/linux/irqchip/chained_irq.h b/include/linux/irqchip/chained_irq.h
index dd8b3c476666..7ee29e478152 100644
--- a/include/linux/irqchip/chained_irq.h
+++ b/include/linux/irqchip/chained_irq.h
@@ -38,4 +38,6 @@ static inline void chained_irq_exit(struct irq_chip *chip,
chip->irq_unmask(&desc->irq_data);
}
+DEFINE_GUARD(chained_irq, struct irq_desc *, chained_irq_exit((_T->irq_data.chip), (_T)),
+ chained_irq_enter((_T->irq_data.chip), (_T)))
>
> * Would you like to support scoped guard variants accordingly?
Do you mean that I need to change the MACRO name for this usage?
>
>
> Regards,
> Markus
