> > On Wed, Mar 11, 2015 at 02:37:45PM +0800, Peter Chen wrote: > > We should signal connect (pull up dp) after we have already at > > peripheral mode, otherwise, the dp may be toggled due to we reset > > controller or do disconnect during the initialization for peripheral, > > then, the host may be confused during the enumeration, eg, it finds > > the reset can't succeed, but the device is still there, see below > > error message. > > > > hub 1-0:1.0: USB hub found > > hub 1-0:1.0: 1 port detected > > hub 1-0:1.0: cannot reset port 1 (err = -32) hub 1-0:1.0: cannot reset > > port 1 (err = -32) hub 1-0:1.0: cannot reset port 1 (err = -32) hub > > 1-0:1.0: cannot reset port 1 (err = -32) hub 1-0:1.0: cannot reset > > port 1 (err = -32) hub 1-0:1.0: Cannot enable port 1. Maybe the USB > > cable is bad? > > hub 1-0:1.0: cannot reset port 1 (err = -32) hub 1-0:1.0: cannot reset > > port 1 (err = -32) hub 1-0:1.0: cannot reset port 1 (err = -32) hub > > 1-0:1.0: cannot reset port 1 (err = -32) hub 1-0:1.0: cannot reset > > port 1 (err = -32) hub 1-0:1.0: Cannot enable port 1. Maybe the USB > > cable is bad? > > hub 1-0:1.0: cannot reset port 1 (err = -32) hub 1-0:1.0: cannot reset > > port 1 (err = -32) hub 1-0:1.0: cannot reset port 1 (err = -32) hub > > 1-0:1.0: cannot reset port 1 (err = -32) hub 1-0:1.0: cannot reset > > port 1 (err = -32) hub 1-0:1.0: Cannot enable port 1. Maybe the USB > > cable is bad? > > hub 1-0:1.0: cannot reset port 1 (err = -32) hub 1-0:1.0: cannot reset > > port 1 (err = -32) hub 1-0:1.0: cannot reset port 1 (err = -32) hub > > 1-0:1.0: cannot reset port 1 (err = -32) hub 1-0:1.0: cannot reset > > port 1 (err = -32) hub 1-0:1.0: Cannot enable port 1. Maybe the USB > > cable is bad? > > hub 1-0:1.0: unable to enumerate USB device on port 1 > > > > Cc: stable@xxxxxxxxxxxxxxx > > which commit are you fixing ? You need something like: > > Fixes: 123456789012 ("commit short description") > Cc: <stable@xxxxxxxxxxxxxxx> # vX.Y+ This issue was existed before v3.0, I will add at next version, thanks. Peter -- 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