From: Arnd Bergmann <arnd@arndb.de>
To: Hein Tibosch <hein_tibosch@yahoo.es>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
viresh kumar <viresh.kumar@linaro.org>,
"spear-devel" <spear-devel@list.st.com>,
"Hans-Christian Egtvedt" <egtvedt@samfundet.no>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"ludovic.desroches" <ludovic.desroches@atmel.com>,
Havard Skinnemoen <havard@skinnemoen.net>,
Nicolas Ferre <nicolas.ferre@atmel.com>
Subject: Re: [PATCH REGRESSION FIX] dw_dmac: make driver's endianness configurable
Date: Sun, 14 Oct 2012 19:09:33 +0000 [thread overview]
Message-ID: <201210141909.34098.arnd@arndb.de> (raw)
In-Reply-To: <507A6FA5.1000800@yahoo.es>
On Sunday 14 October 2012, Hein Tibosch wrote:
> From: Hein Tibosch <hein_tibosch@yahoo.es>
>
> The dw_dmac was originally developed for avr32 to be used with the Synopsys
> DesignWare AHB DMA controller. Starting from 2.6.38, access to the device's i/o
> memory was done with the little-endian readl/writel functions(1)
>
> This broke the driver for the avr32 platform, because it needs big (native)
> endian accessors.
> This patch makes the endianness configurable using 'DW_DMAC_BIG_ENDIAN_IO',
> which will default be true for AVR32
>
> I submitted this patch before(2) but then waited for Andy to finish other
> changes to the same module(3).
>
> (1) https://patchwork.kernel.org/patch/608211
> (2) https://lkml.org/lkml/2012/8/26/148
> (3) https://lkml.org/lkml/2012/9/21/173
>
> Signed-off-by: Hein Tibosch <hein_tibosch@yahoo.es>
Acked-by: Arnd Bergmann <arnd@arndb.de>
next prev parent reply other threads:[~2012-10-14 19:09 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-14 7:54 [PATCH REGRESSION FIX] dw_dmac: make driver's endianness configurable Hein Tibosch
2012-10-14 19:09 ` Arnd Bergmann [this message]
2012-10-14 20:08 ` Andy Shevchenko
2012-10-15 0:39 ` Hein Tibosch
2012-10-15 7:31 ` Andy Shevchenko
2012-10-15 3:19 ` viresh kumar
2012-10-23 23:12 ` Andrew Morton
2012-10-24 0:53 ` Hein Tibosch
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