On Mon, Jul 30, 2012 at 12:48:41PM -0500, Timur Tabi wrote:

qiang.liu@freescale.com wrote:

quoted

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