[OpenWrt-Devel] [PATCH] ath79: reduce irq count in irq-ath79-misc.c

[Dmitry Tunin]

We probably need to add a SoC check there. Otherwise we'll have two 32
IRQ domains when using it with PCI.
I guess older ones have 8 IRQs and newer ones - 16. We cal leave
default of 32 for unknown SoCs if there are any.
ср, 22 авг. 2018 г. в 13:59, Dmitry Tunin <hanipouspilot at gmail.com>:
>
> Oops. I looked into newer specs. Some chips now have 16.
> ср, 22 авг. 2018 г. в 13:50, Dmitry Tunin <hanipouspilot at gmail.com>:
> >
> > According to specs this interrupt controller has 8 IRQs (0-7).
> > If we reuse it for PCI, we need even less (0-4).
> > We don't need that hude domain there.
> >
> > Signed-off-by: Dmitry Tunin <hanipouspilot at gmail.com>
> > ---
> >  .../0037-MIPS-ath79-irq-misc-reduce-irq-count.patch         | 13 +++++++++++++
> >  1 file changed, 13 insertions(+)
> >  create mode 100644 target/linux/ath79/patches-4.14/0037-MIPS-ath79-irq-misc-reduce-irq-count.patch
> >
> > diff --git a/target/linux/ath79/patches-4.14/0037-MIPS-ath79-irq-misc-reduce-irq-count.patch b/target/linux/ath79/patches-4.14/0037-MIPS-ath79-irq-misc-reduce-irq-count.patch
> > new file mode 100644
> > index 0000000..b9ab092
> > --- /dev/null
> > +++ b/target/linux/ath79/patches-4.14/0037-MIPS-ath79-irq-misc-reduce-irq-count.patch
> > @@ -0,0 +1,13 @@
> > +Index: linux-4.14.65/drivers/irqchip/irq-ath79-misc.c
> > +===================================================================
> > +--- linux-4.14.65.orig/drivers/irqchip/irq-ath79-misc.c
> > ++++ linux-4.14.65/drivers/irqchip/irq-ath79-misc.c
> > +@@ -21,7 +21,7 @@
> > + #define AR71XX_RESET_REG_MISC_INT_STATUS      0
> > + #define AR71XX_RESET_REG_MISC_INT_ENABLE      4
> > +
> > +-#define ATH79_MISC_IRQ_COUNT                  32
> > ++#define AR71XX_MISC_IRQ_COUNT                 8
> > +
> > + static void ath79_misc_irq_handler(struct irq_desc *desc)
> > + {
> > --
> > 2.7.4
> >

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