linux-kernel - Re: [PATCH] ARM: pxa: arbitrarily set first interrupt number

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Date:	Thu, 04 Dec 2014 22:27:50 +0100
From:	Robert Jarzmik <robert.jarzmik@...e.fr>
To:	Daniel Mack <daniel@...que.org>
Cc:	Haojian Zhuang <haojian.zhuang@...il.com>,
	Russell King <linux@....linux.org.uk>,
	Rob Herring <robherring2@...il.com>,
	Marc Zyngier <marc.zyngier@....com>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: pxa: arbitrarily set first interrupt number

Robert Jarzmik <robert.jarzmik@...e.fr> writes:

> As IRQ0, the legacy timer interrupt  should not be used as an interrupt
> number, shift the interrupts by a fixed number.
>
> As we had in a special case a shift of 16 when ISA bus was used on a
> PXA, use that value as the first interrupt number, regardless of ISA or
> not.
>
> Signed-off-by: Robert Jarzmik <robert.jarzmik@...e.fr>

> ---
>  arch/arm/mach-pxa/Kconfig             | 5 -----
>  arch/arm/mach-pxa/include/mach/irqs.h | 9 ++-------
>  2 files changed, 2 insertions(+), 12 deletions(-)
>
> diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig
> index e6690a4..bfca4ead 100644
> --- a/arch/arm/mach-pxa/Kconfig
> +++ b/arch/arm/mach-pxa/Kconfig
> @@ -73,14 +73,12 @@ config ARCH_VIPER
>  	select I2C_GPIO if I2C=y
>  	select ISA
>  	select PXA25x
> -	select PXA_HAVE_ISA_IRQS
>  
>  config MACH_ARCOM_ZEUS
>  	bool "Arcom/Eurotech ZEUS SBC"
>  	select ARCOM_PCMCIA
>  	select ISA
>  	select PXA27x
> -	select PXA_HAVE_ISA_IRQS
>  
>  config MACH_BALLOON3
>  	bool "Balloon 3 board"
> @@ -680,9 +678,6 @@ config SHARPSL_PM_MAX1111
>  	select SPI
>  	select SPI_MASTER
>  
> -config PXA_HAVE_ISA_IRQS
> -	bool
> -
>  config PXA310_ULPI
>  	bool
>  
> diff --git a/arch/arm/mach-pxa/include/mach/irqs.h b/arch/arm/mach-pxa/include/mach/irqs.h
> index 48c2fd8..83e04d4 100644
> --- a/arch/arm/mach-pxa/include/mach/irqs.h
> +++ b/arch/arm/mach-pxa/include/mach/irqs.h
> @@ -12,14 +12,9 @@
>  #ifndef __ASM_MACH_IRQS_H
>  #define __ASM_MACH_IRQS_H
>  
> -#ifdef CONFIG_PXA_HAVE_ISA_IRQS
> -#define PXA_ISA_IRQ(x)	(x)
> -#define PXA_ISA_IRQ_NUM	(16)
> -#else
> -#define PXA_ISA_IRQ_NUM	(0)
> -#endif
> +#include <asm/irq.h>
>  
> -#define PXA_IRQ(x)	(PXA_ISA_IRQ_NUM + (x))
> +#define PXA_IRQ(x)	(NR_IRQS_LEGACY + (x))
>  
>  #define IRQ_SSP3	PXA_IRQ(0)	/* SSP3 service request */
>  #define IRQ_MSL		PXA_IRQ(1)	/* MSL Interface interrupt */

OK, nobody objected nor acked. I'll queue that up in pxa/for-next then.

-- 
Robert
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