[linuxppc-release] [PATCH v4 7/7] fsl-dma: add memcpy self test interface

[Ira W. Snyder]

On Mon, Jul 30, 2012 at 12:48:41PM -0500, Timur Tabi wrote:
> qiang.liu at freescale.com wrote:
> > 
> > Add memory copy self test when probe device, fsl-dma will be disabled
> > if self test failed.
> 
> Is this a real problem that can occur?  The DMA driver used to have a
> self-test, but I removed it a long time ago because it was pointless.  I
> don't see why we need to add another one back in.
> 
> -- 
> Timur Tabi
> Linux kernel developer at Freescale
> 

I made a comment that a test suite for the async_tx API would be very
helpful in diagnosing similar problems in this and other DMA drivers.
Something standalone, similar to the drivers/dma/dmatest.c driver, using
the async_tx API.

I think this was misinterpreted into me asking that the driver have a
built-in self test.

Ira