linux-kernel - Re: [PATCH v2 3/3] ACPI / ARM64 : use the new BAD_MADT_GICC

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Date:	Fri, 19 Jun 2015 10:46:58 +0100
From:	Will Deacon <will.deacon@....com>
To:	Al Stone <al.stone@...aro.org>
Cc:	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"rjw@...ysocki.net" <rjw@...ysocki.net>,
	"lenb@...nel.org" <lenb@...nel.org>,
	Catalin Marinas <Catalin.Marinas@....com>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"jason@...edaemon.net" <jason@...edaemon.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linaro-acpi@...ts.linaro.org" <linaro-acpi@...ts.linaro.org>,
	"linaro-kernel@...ts.linaro.org" <linaro-kernel@...ts.linaro.org>,
	"patches@...aro.org" <patches@...aro.org>
Subject: Re: [PATCH v2 3/3] ACPI / ARM64 : use the new BAD_MADT_GICC_ENTRY
 macro

On Thu, Jun 18, 2015 at 11:36:08PM +0100, Al Stone wrote:
> For those parts of the arm64 ACPI code that need to check GICC subtables
> in the MADT, use the new BAD_MADT_GICC_ENTRY macro instead of the previous
> BAD_MADT_ENTRY.  The new macro takes into account differences in the size
> of the GICC subtable that the old macro did not; this caused failures even
> though the subtable entries are valid.
> 
> Signed-off-by: Al Stone <al.stone@...aro.org>
> ---
>  arch/arm64/kernel/smp.c   | 2 +-
>  drivers/irqchip/irq-gic.c | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)

Acked-by: Will Deacon <will.deacon@....com>

Good to see this stuff is holding up so well...

Will

> diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
> index 4b2121b..80d5984 100644
> --- a/arch/arm64/kernel/smp.c
> +++ b/arch/arm64/kernel/smp.c
> @@ -438,7 +438,7 @@ acpi_parse_gic_cpu_interface(struct acpi_subtable_header *header,
>  	struct acpi_madt_generic_interrupt *processor;
>  
>  	processor = (struct acpi_madt_generic_interrupt *)header;
> -	if (BAD_MADT_ENTRY(processor, end))
> +	if (BAD_MADT_GICC_ENTRY(processor, end))
>  		return -EINVAL;
>  
>  	acpi_table_print_madt_entry(header);
> diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
> index 8d7e1c8..4dd8826 100644
> --- a/drivers/irqchip/irq-gic.c
> +++ b/drivers/irqchip/irq-gic.c
> @@ -1055,7 +1055,7 @@ gic_acpi_parse_madt_cpu(struct acpi_subtable_header *header,
>  
>  	processor = (struct acpi_madt_generic_interrupt *)header;
>  
> -	if (BAD_MADT_ENTRY(processor, end))
> +	if (BAD_MADT_GICC_ENTRY(processor, end))
>  		return -EINVAL;
>  
>  	/*
> -- 
> 2.4.0
> 
--
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