linux-kernel - RE: [spi-devel-general] [PATCH 1/2] spi: new SPI bus lock/unlockfunctions

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Message-ID: <BD79186B4FD85F4B8E60E381CAEE19090200ED81@mi8nycmail19.Mi8.com>
Date:	Wed, 16 Dec 2009 17:49:41 -0500
From:	"H Hartley Sweeten" <hartleys@...ionengravers.com>
To:	"Mike Frysinger" <vapier@...too.org>,
	<spi-devel-general@...ts.sourceforge.net>,
	"David Brownell" <dbrownell@...rs.sourceforge.net>
Cc:	"Yi Li" <yi.li@...log.com>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	<linux-kernel@...r.kernel.org>
Subject: RE: [spi-devel-general] [PATCH 1/2] spi: new SPI bus lock/unlockfunctions

On Thursday, September 17, 2009 3:03 PM, Mike Frysinger wrote:
>
> From: Yi Li <yi.li@...log.com>
>
> For some MMC cards over SPI bus, it needs to lock the SPI bus for its own
> use.  The SPI transfer must not be interrupted by other SPI devices that
> share the SPI bus with SPI MMC card.
> 
> This patch introduces 2 APIs for SPI bus locking operation.
> 
> Signed-off-by: Yi Li <yi.li@...log.com>
> Signed-off-by: Bryan Wu <cooloney@...nel.org>
> Signed-off-by: Mike Frysinger <vapier@...too.org>

Has any additional work be done on this patchset?

It would be nice to finally have a solution that lets the mmc_spi driver
work on a shared spi bus.

Regards,
Hartley
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