Re: xhci throws EPROTO errors under load with CONFIG_DMA_API_DEBUG=Y

2014-07-18 Thread Hans de Goede
Hi, On 07/17/2014 06:08 PM, Hans de Goede wrote: > Hi all, > > It has cost me quite some time to get to the bottom of this (which is > not even the real bottom). > > When I generate heavy-io (make -j4 modules or cp -pr a git clone > of the kernel), urbs start completing with EPROTO errors when u

xhci throws EPROTO errors under load with CONFIG_DMA_API_DEBUG=Y

2014-07-17 Thread Hans de Goede
Hi all, It has cost me quite some time to get to the bottom of this (which is not even the real bottom). When I generate heavy-io (make -j4 modules or cp -pr a git clone of the kernel), urbs start completing with EPROTO errors when using a Renesas uPD720231 chipset usb-3 uas to sata bridge with a