netdev - Re: [spi-devel-general] [PATCH] enc28j60: Fix sporadic packet loss (correction)

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Message-Id: <200812022304.20661.david-b@pacbell.net>
Date:	Tue, 2 Dec 2008 23:04:20 -0800
From:	David Brownell <david-b@...bell.net>
To:	Baruch Siach <baruch@...s.co.il>
Cc:	spi-devel-general@...ts.sourceforge.net,
	Claudio Lanconelli <lanconelli.claudio@...ar.com>,
	Shachar Shemesh <shachar@...gnu.com>,
	Network development list <netdev@...r.kernel.org>
Subject: Re: [spi-devel-general] [PATCH] enc28j60: Fix sporadic packet loss (correction)

On Tuesday 02 December 2008, Baruch Siach wrote:

> Apparently I haven't explained myself clear enough. The (partial) driver that 
> Peter Pearse has posted[1] to LAKL is for the PL080 DMA controller. This 
> driver is ARM specific, so LAKL seems to be reasonable place even though the 
> driver itself is under drivers/amba (which is ARM specific as well).

Actually AMBA has generalized past being ARM-specific.
It's just a chip-internal bus, and the silicon-IP
end of ARM Ltd has been successful enough that vendors
use it with non-ARM CPUs too.

Example:  you'll notice that drivers/dma/dw_dmac.c was
first used on a non-ARM system; it's a Synopsys DesignWare
(dw) DMA controller (dmac) for AMBA2, with AHB and APB.

So let me suggest LKML, with an FYI to the ARM list,
and putting that driver in drivers/dma instead. :)

But yes, now I see what you mean:  discrete DMA and SPI
drivers.

- Dave

> My Synopsys DesignWare SPI master driver will, when complete, depend on this 
> DMA controller driver, that's not in the mainline (yet).
> 
> > Post it to the SPI list instead.  ...
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