On Sun, Feb 15, 2015 at 03:39:48PM +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 > > Signed-off-by: Peter Chen <peter.chen@xxxxxxxxxxxxx> when was this introduced ? Do you want to Cc stable ? (hint: you do) -- balbi
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