]> www.infradead.org Git - users/jedix/linux-maple.git/commit
usb: hub: delay hub autosuspend if USB3 port is still link training
authorMathias Nyman <mathias.nyman@linux.intel.com>
Wed, 28 Nov 2018 13:55:21 +0000 (15:55 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 12 Feb 2019 18:46:01 +0000 (19:46 +0100)
commitc5c88a3d924bf726f4ac8097081cf704d0cad39c
tree6281d672581b54ef2d1a4446845d68d2308b4b06
parent6f61f3456637d8b183db256005ed2211ca55777e
usb: hub: delay hub autosuspend if USB3 port is still link training

[ Upstream commit e86108940e541febf35813402ff29fa6f4a9ac0b ]

When initializing a hub we want to give a USB3 port in link training
the same debounce delay time before autosuspening the hub as already
trained, connected enabled ports.

USB3 ports won't reach the enabled state with "current connect status" and
"connect status change" bits set until the USB3 link training finishes.

Catching the port in link training (polling) and adding the debounce delay
prevents unnecessary failed attempts to autosuspend the hub.

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/usb/core/hub.c