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* [PATCH] dmaengine: add slave-dma maintainer
@ 2011-02-14 11:58 Dan Williams
  2011-02-15 19:35 ` Linus Walleij
  0 siblings, 1 reply; 2+ messages in thread
From: Dan Williams @ 2011-02-14 11:58 UTC (permalink / raw)
  To: linux-kernel; +Cc: linux-raid, Vinod Koul, linux-arm-kernel, Alan Cox

Slave-dma has become the predominant usage model for dmaengine and needs
special attention.  Memory-to-memory dma usage cases will continue to be
maintained by Dan.

Cc: Alan Cox <alan@linux.intel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---

Several factors have contributed to the need to add a co-maintainer
to dmaengine.  First my time is being consumed in other areas [1].
Also, after Russell's review of amba-pl08x it became clear that the
semantics of the slave interface need to specified [2].  My work on the
iop-adma and ioatdma drivers has been limited to the memory-to-memory
use cases (NET_DMA and ASYNC_TX_DMA).  Without direct slave-dma api
experience (client driver or dma driver) it is difficult to parse its
needs outside of its base similarities with the memory-to-memory case.

I have asked my colleague, Vinod Koul, to:
1/ put more definition around the slave api and usages to try to ensure 
consistent behavior across drivers (as much as possible)
2/ help review and merge new drivers according to this definition

Vinod wrote the intel_mid_dma driver and expects to be involved with
slave-dma for the foreseeable future.

I will continue to maintain the memory-to-memory and related async_tx 
usages of dmaengine (that need fixing [3]), but it is clear that this
usage has become a secondary role for the dmaengine infrastructure.

--
Dan

[1]: http://marc.info/?l=linux-scsi&m=129703780424729&w=2
[2]: http://marc.info/?l=linux-arm-kernel&m=129383280413633&w=2
[3]: http://marc.info/?l=linux-arm-kernel&m=129407269402930&w=2


 MAINTAINERS |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/MAINTAINERS b/MAINTAINERS
index 55592f8..e2f0992 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2124,6 +2124,7 @@ S:	Supported
 F:	fs/dlm/
 
 DMA GENERIC OFFLOAD ENGINE SUBSYSTEM
+M:	Vinod Koul <vinod.koul@intel.com>
 M:	Dan Williams <dan.j.williams@intel.com>
 S:	Supported
 F:	drivers/dma/


^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: [PATCH] dmaengine: add slave-dma maintainer
  2011-02-14 11:58 [PATCH] dmaengine: add slave-dma maintainer Dan Williams
@ 2011-02-15 19:35 ` Linus Walleij
  0 siblings, 0 replies; 2+ messages in thread
From: Linus Walleij @ 2011-02-15 19:35 UTC (permalink / raw)
  To: Dan Williams
  Cc: linux-kernel, linux-raid, Vinod Koul, linux-arm-kernel, Alan Cox

2011/2/14 Dan Williams <dan.j.williams@intel.com>:

> I have asked my colleague, Vinod Koul, to:
> 1/ put more definition around the slave api and usages to try to ensure
> consistent behavior across drivers (as much as possible)
> 2/ help review and merge new drivers according to this definition

Excellent choice, thanks to Dan & Vinod for taking on this!

Yours,
Linus Walleij

^ permalink raw reply	[flat|nested] 2+ messages in thread

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2011-02-15 19:35 ` Linus Walleij

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