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(parent: f37c88d) | 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>
Thu, 20 May 2010 20:21:45 +0000 (13:21 -0700)
commit083148b74009a1eac9df0678ae2923550cabd9b1
tree0cbf986a987df044234bba1ad0a1c6565268a4f1tree | snapshot
parentf37c88d01a1ec984c0ae4310184898c496ba90eccommit | diff
USB: EHCI: clear PHCD before resuming

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>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/usb/host/ehci-hub.c diff | blob | history
Linux Kernel Source Tree.