USB: EHCI: EHCI 1.1 addendum: Enable Per-port change detect bits

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This patch will enable Per-port event feature defined in EHCI 1.1
addendum. This feature addresses an issue where HCD is currently
required to read and parse PORTSC for all enabled root hub ports. With
this patch, the overhead will be reduced.

Signed-off-by: Alek Du <alek.du@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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Alek Du 2010-06-04 15:47:56 +08:00 • committed by Greg Kroah-Hartman

parent 48f2497014

commit 5a9cdf332e

3 changed files with 27 additions and 2 deletions

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19

drivers/usb/host/ehci-hcd.c

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9

drivers/usb/host/ehci-hub.c

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1

drivers/usb/host/ehci.h

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