RE: [PATCH 22/29] net_dma: poll for a descriptor after allocation failure

Sosnowski, Maciej
2009-09-14T15:00:52Z

Williams, Dan J wrote:
> Handle descriptor allocation failures by polling for a descriptor. The
> driver will force forward progress when polled. In the best case this
> polling interval will be the time it takes for one dma memcpy
> transaction to complete. In the worst case, channel hang, we will need
> to wait 100ms for the cleanup watchdog to fire (ioatdma driver).
>
> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
> ---