Hi, On Thu, Nov 22, 2018 at 03:12:36PM +0000, Russell King - ARM Linux wrote: > On Thu, Nov 22, 2018 at 10:29:48AM +0000, Russell King - ARM Linux wrote: > > On Tue, Nov 20, 2018 at 11:04:06PM +0200, Aaro Koskinen wrote: > > > I had switched to PIO mode in 2015 since the WARNs about legacy DMA > > > API were too annoying and flooding the console. And now that I tried > > > using DMA again with g_ether, it doesn't work anymore. The device get's > > > recognized on host side, but no traffic goes through. Switching back to > > > PIO makes it to work again. > > > > A solution to that would be to do what the warning message says, and > > update the driver to the DMAengine API. Fully agreed, but I was busy debugging other more serious issues, and just wanted to get a reliable ssh or USB serial access to the device without any extra noise, so switching to PIO using a module parameter is probably what most users do in such situations. > Here's a partial conversion (not even build tested) - it only supports > OUT transfers with dmaengine at the moment. Thanks, I'll take a closer look and try to do some testing hopefully during the weekend. A.
