http://bugzilla.kernel.org/show_bug.cgi?id=12730 stern@xxxxxxxxxxxxxxxxxxx changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |stern@xxxxxxxxxxxxxxxxxxx ------- Comment #2 from stern@xxxxxxxxxxxxxxxxxxx 2009-02-18 07:19 ------- Unfortunately, a lot of EHCI hardware seems to have trouble carrying out transfers over different ports concurrently. Your log doesn't contain enough information to tell just what happened. If you want more information, you can build a kernel with CONFIG_USB_DEBUG enabled. There may or may not have been an actual USB disconnect. (Such an electronic disconnect is indeed indistinguishable from a physical unplug.) The log shows that the 1-2 drive got into an error state requiring a reset; quite possibly the reset failed. This leaves the kernel no choice but to carry out a "logical" disconnect. While it's not exactly the same as a physical disconnect, it is treated the same way and so it is indistinguishable as far as most of the kernel is concerned. It's impossible to tell whether the error state was caused by the drive or by the EHCI controller. To find out for certain, you'd have to use a USB bus analyzer. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
