On Mon, 18 Mar 2013, Stephen Warren wrote: > Alan, > > In v3.9-rc3, I find that "reboot" and "shutdown" hang on Tegra. I > bisected it to commit 6402c79 "USB: EHCI: work around silicon bug in > Intel's EHCI controllers", and confirmed that running v3.9-rc3 with just > that one patch reverted does solve the problem. > > Do you have any idea what the problem might be, or is there anything I > can do to help debug this? Thanks. Is there any way to find out where the hangup occurs? For example, can you get anything from Alt-SysRq-W? Failing that, can you put some printk statements in drivers/usb/host/ehci-hcd.c, in the ehci_halt(), ehci_silence_controller(), and ehci_shutdown() routines? (Although I suspect this may not help because the hangup occurs somewhere else...) Alan Stern -- 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
