usb: hub: Fix auto-remount of safely removed or ejected USB-3 devices

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commit 37be66767e upstream.

USB-3 does not have any link state that will avoid negotiating a connection
with a plugged-in cable but will signal the host when the cable is
unplugged.

For USB-3 we used to first set the link to Disabled, then to RxDdetect to
be able to detect cable connects or disconnects. But in RxDetect the
connected device is detected again and eventually enabled.

Instead set the link into U3 and disable remote wakeups for the device.
This is what Windows does, and what Alan Stern suggested.

Cc: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

...

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Mathias Nyman 2016-11-17 11:14:14 +02:00 • committed by Ben Hutchings

parent e658804f82

commit 81f3d5f2d3

1 changed files with 36 additions and 65 deletions

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drivers/usb/core/hub.c

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