linux-kernel - Re: [PATCH] ibm_newemac: Fix new MAL feature handling

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Message-Id: <200810171456.53599.arnd@arndb.de>
Date:	Fri, 17 Oct 2008 14:56:52 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	linuxppc-dev@...abs.org
Cc:	Josh Boyer <jwboyer@...ux.vnet.ibm.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	netdev@...r.kernel.org, Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ibm_newemac: Fix new MAL feature handling

On Thursday 16 October 2008, Josh Boyer wrote:
> +#ifdef CONFIG_PPC_DCR_NATIVE
>         if (mal_has_feature(mal, MAL_FTR_CLEAR_ICINTSTAT))
>                 mtdcri(SDR0, DCRN_SDR_ICINTSTAT,
>                                 (mfdcri(SDR0, DCRN_SDR_ICINTSTAT) | ICINTSTAT_ICTX));
> +#endif
>  

So what if you have a mmio based DRC implementation and still want to use
this feature?

I guess you really should use dcr_read/dcr_write here instead of mtdcr/mfdcr.

	Arnd <><
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