Adding Mathias Nyman. He is now the USB 3.0 maintainer. Sarah Sharp On Thu, Aug 14, 2014 at 11:46:33AM +0200, Hans de Goede wrote: > Hi, > > On 08/14/2014 10:39 AM, Claudio Bizzarri wrote: > > Ciao, > > > > thank you very much for replay, you are right: it's UAS module. Now I'm > > using Ubuntu 14.04 with kernel 3.16.1 from > > http://kernel.ubuntu.com/~kernel-ppa/mainline/, there is no /proc/config.gz, > > but but there is a config file in /boot: > > > > b0@hp850ssd:~⟫ grep USB_UAS /boot/config-3.16.1-031601-generic > > CONFIG_USB_UAS=m > > > > When I attach my external USB disk I've 30 seconds before my laptop freeze, > > here is my dmesg output, disk is not mounted: > > Hmm, this sounds like a similar problem we've been having with JMicron UAS > bridges over USB-2. > > Can you collect "lsusb -v" output for the drive in question when connected > through an usb-3 port (the uas module does not need to be loaded). > > Also can you try the following patch, and see if that makes uas work ? : > > diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c > index 511b229..6cdc1b9 100644 > --- a/drivers/usb/storage/uas.c > +++ b/drivers/usb/storage/uas.c > @@ -1033,6 +1033,7 @@ static int uas_configure_endpoints(struct uas_dev_info *devinfo) > 3, 256, GFP_NOIO); > if (devinfo->qdepth < 0) > return devinfo->qdepth; > + devinfo->qdepth = 32; > devinfo->use_streams = 1; > } > > > This is in essence the fix we've done for using these devices with uas over usb-2, > I would have expected this to not be be necessary at superspeed since there the number > of streams the device supports is part of the usb descriptors, but maybe the device > claims to support more streams then it can actually handle. > > Note I'm on vacation next week, so don't expect another reply from me in this thread > for at least a week. > > Regards, > > Hans -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
