On Friday, August 14, 2015 at 12:48:57 AM, Sergei Temerkhanov wrote:
Hi,
please stop top-posting :(
Well, when I was working on this, setting large transfer sizes resulted in, AFAIR, xhci_wait_for_event() timeout and changing XHCI_TIMEOUT doesn't help. This function returns NULL which is being dereferenced somewhere else (I don't remember where exactly), there are several places in the generic xhci support code where this is possible - I think it was abort_td().
Can you please send fixes for those null-pointer dereferences you're triggering? Also, I suspect that if your controller cannot support arbitrary lenght of the descriptors, it might be a controller bug and a quirk should be introduced. Does the controller work in Linux ?
Regards, Sergey
On Thu, Aug 13, 2015 at 10:34 PM, Marek Vasut marex@denx.de wrote:
On Thursday, August 13, 2015 at 09:13:52 PM, Sergei Temerkhanov wrote:
Tried different values but transfer sizes larger than ~8k blocks never complete on some controllers causing timeouts and crashes. So, 4k blocks
is
a safe enough xfer size
Would you please elaborate on this ?
Best regards, Marek Vasut
Best regards, Marek Vasut