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(parent: 068c984) | patch
USB: EHCI: clear PHCD before resuming
authorAlek Du <alek.du@intel.com>
Mon, 10 May 2010 03:17:49 +0000 (11:17 +0800)
committerGreg Kroah-Hartman <gregkh@suse.de>
Mon, 5 Jul 2010 18:22:08 +0000 (11:22 -0700)
commita9093288d3428afaec9cf2097c3edc0982a69ad0
treed7794f5fdb65f6fc61d85604878324c29191dae8tree | snapshot
parent068c984526dcdafae7fde7ce8d6135bcc48950dacommit | diff
USB: EHCI: clear PHCD before resuming

commit eab80de01cb398419ef3305f35abcb367c647c8b upstream.

This is a bug fix for PHCD (phy clock disable) low power feature:
After PHCD is set, any write to PORTSC register is illegal, so when
resume ports, clear PHCD bit first.

Signed-off-by: Alek Du <alek.du@intel.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/usb/host/ehci-hub.c diff | blob | history
Linux kernel for KaRo TX COM modules