On Wed, 2014-09-03 at 18:10 +0200, Jiri Svoboda wrote: > Hi Jan, > > I ran into this in the following setup: > Qemu with UHCI HC (-usb) and with a real flash stick connected to the host > port forwarded into Qemu (-usbdevice host:xxxx:yyyy) > > Since you say low-speed bulk transfers are not allowed, this is probably a > bug in Qemu, so it can be considered a workaround. > We could certainly file a bug with Qemu and then remove the workaround, but > still, I would expect the driver to handle the situation gracefully, instead > of crashing. >
thanks for the info, can you point me to the bug when you report it? did the usb stick work with the workaround I think checking the queue pointer for null and refusing transfer would be the right solution here. jan > Cheers, > Jiri > > > Od: Ján Veselý > > Hi Jiri, > " > I noticed your 'Fix low-speed bulk transfer in UHCI'. the USB specs > explicitly state that only full speed bulk transfers are allowed. Have > you run into a bug related to this? if so is that a real device or > qemu(other emulator) based one? > > jan > > _______________________________________________ > HelenOS-devel mailing list > [email protected] > http://lists.modry.cz/listinfo/helenos-devel"; > _______________________________________________ HelenOS-devel mailing list > [email protected] http://lists.modry.cz/listinfo/helenos-devel
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