linux-kernel - Re: [PATCH] ARM: at91: debug: fix non MMU debug

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Message-ID: <54F828C3.6090901@atmel.com>
Date:	Thu, 5 Mar 2015 10:58:27 +0100
From:	Nicolas Ferre <nicolas.ferre@...el.com>
To:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
CC:	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>,
	"Boris Brezillon" <boris.brezillon@...e-electrons.com>
Subject: Re: [PATCH] ARM: at91: debug: fix non MMU debug

Le 04/03/2015 15:41, Alexandre Belloni a écrit :
> Linux may be used without MMU on atmel SoCs, fix debug in this configuration.
> 
> Signed-off-by: Alexandre Belloni <alexandre.belloni@...e-electrons.com>

Acked-by: Nicolas Ferre <nicolas.ferre@...el.com>
and stacked on top of at91-4.0-fixes.

Thanks!

> ---
>  arch/arm/include/debug/at91.S | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm/include/debug/at91.S b/arch/arm/include/debug/at91.S
> index 80a6501b4d50..c3c45e628e33 100644
> --- a/arch/arm/include/debug/at91.S
> +++ b/arch/arm/include/debug/at91.S
> @@ -18,8 +18,11 @@
>  #define AT91_DBGU 0xfc00c000 /* SAMA5D4_BASE_USART3 */
>  #endif
>  
> -/* Keep in sync with mach-at91/include/mach/hardware.h */
> +#ifdef CONFIG_MMU
>  #define AT91_IO_P2V(x) ((x) - 0x01000000)
> +#else
> +#define AT91_IO_P2V(x) (x)
> +#endif
>  
>  #define AT91_DBGU_SR		(0x14)	/* Status Register */
>  #define AT91_DBGU_THR		(0x1c)	/* Transmitter Holding Register */
> 


-- 
Nicolas Ferre
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