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authorMathias Nyman <mathias.nyman@linux.intel.com>2017-10-17 16:07:33 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-10-27 10:23:15 +0200
commit67e25805e74879eb40bffe7b8e660c3966ee113a (patch)
treeee139bb79da2f73ac8b9dfa1d05ae598168356be /sound/usb
parentd012ab210f5f4ff4e6f5567fe80e1dcc82077c2d (diff)
usb: hub: Allow reset retry for USB2 devices on connect bounce
commit 1ac7db63333db1eeff901bfd6bbcd502b4634fa4 upstream. If the connect status change is set during reset signaling, but the status remains connected just retry port reset. This solves an issue with connecting a 90W HP Thunderbolt 3 dock with a Lenovo Carbon x1 (5th generation) which causes a 30min loop of a high speed device being re-discovererd before usb ports starts working. [...] [ 389.023845] usb 3-1: new high-speed USB device number 55 using xhci_hcd [ 389.491841] usb 3-1: new high-speed USB device number 56 using xhci_hcd [ 389.959928] usb 3-1: new high-speed USB device number 57 using xhci_hcd [...] This is caused by a high speed device that doesn't successfully go to the enabled state after the second port reset. Instead the connection bounces (connected, with connect status change), bailing out completely from enumeration just to restart from scratch. Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1716332 Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound/usb')
0 files changed, 0 insertions, 0 deletions