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From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
To: linux-sh@vger.kernel.org
Cc: linux-mmc@vger.kernel.org, Simon Horman <horms@verge.net.au>,
	Magnus Damm <damm@opensource.se>, Ian Molton <ian@mnementh.co.uk>,
	Dan Williams <dan.j.williams@intel.com>,
	Vinod Koul <vinod.koul@intel.com>
Subject: [PATCH 0/3] Make DMA slave ID 0 invalid to simplify platform data
Date: Tue, 24 May 2011 10:23:55 +0000	[thread overview]
Message-ID: <Pine.LNX.4.64.1105241147010.31628@axis700.grange> (raw)

Currently platforms, using the SDHI TMIO driver, have to specify negative 
DMA slave IDs to force PIO mode. If default 0 is left, the driver 
recognises it as a valid DMA slave ID and tries to acquire channels. This 
fails then, because the driver cannot allocate two channels with the same 
ID, but it would be better to just make 0 an invalid ID to prevent this.

Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/

             reply	other threads:[~2011-05-24 10:23 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-24 10:23 Guennadi Liakhovetski [this message]
2011-05-24 10:23 ` [PATCH 1/3] sh: mark DMA slave ID 0 as invalid Guennadi Liakhovetski
2011-05-24 10:24 ` [PATCH 2/3] ARM: mach-shmobile: " Guennadi Liakhovetski
2011-05-24 10:24 ` [PATCH 3/3] mmc: SDHI: DMA slave ID 0 is invalid Guennadi Liakhovetski
2011-06-20 14:52   ` Guennadi Liakhovetski
2011-06-20 19:37     ` Chris Ball
2011-05-25  2:32 ` [PATCH 0/3] Make DMA slave ID 0 invalid to simplify platform data Paul Mundt
2011-05-25  6:48   ` [PATCH 0/3] Make DMA slave ID 0 invalid to simplify platform Guennadi Liakhovetski

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