On Tue, Nov 22, 2011 at 06:00:13PM -0500, starlight@xxxxxxxxxxx wrote: > At 12:17 PM 11/22/2011 -0800, Sarah Sharp wrote: > >The patch > >that went in fixes a case where the xHCI driver > >feels the host controller bad data, but only if > >the device needs a reset (which some storage > >devices do when they decide they can't handle a > >particular SCSI command). So the MyBook might > >trigger the xHCI driver bug, but your new drive > >appears not to. > > Interesting. Would make sense that an ASMedia > ASM1051 USB3 bridge would play nicer with an > ASMedia ASM1042 host controller than bridges > from other vendors. I think it's a moot point that the vendors match for the device and host combo that works. You could probably get the AsMedia bridge to fail in the same way as a non-AsMedia bridge under your AsMedia host if you sent it a malformed SCSI command. It's the commands that the userspace and SCSI layer send to the device that cause it to need a USB device reset. > Pretty sure the MyBook has an Initio INIC-3607. > This controller and the JMicron JMS539 found in > the Mukii both have an 8051 CPU and run with the > associated firmware ecosystem--the trigger might > be in some common 8051 code. > > >Any chance you can try the latest kernel from > >Linus' tree and see if it fixes your problem? > > Sure. Had to move to 3.1.1 in the end anyway. > RHEL 6.0 kernel trapped when parted 3.0 > attempted to GPT partition a 4K logical sector > drive. Once one starts compiling kernels, one > more is easy. 3.1.1 works nice so far (i.e. > no crashes), gets along with the RHEL 6 distro > --past experiences were not so pleasant. Ok, great! > Noticed yesterday that running > > smartctl -d sat -a /dev/sdX > > through the ASMedia host controller causes > a 'xhci_hcd WARN: Stalled endpoint' each time. Just ignore those, they're harmless messages and will be removed in the next kernel release. > Makes me wonder if it's related to the > unrecognized SCSI command behavior somehow. > Fortunately nothing worse than the warning > results. > > Testing has to wait till next week. > Presently copying /dev/urandom to the > drive array on the target machine in > preparation for dm-crypt. It might finish > sometime this weekend. Ok, let me know what you find out. Sarah Sharp -- 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
