USB: EHCI: use hrtimer for controller death

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This patch (as1578) adds an hrtimer event to handle the death of an
EHCI controller.  When a controller dies, it doesn't necessarily stop
running right away.  The new event polls at 1-ms intervals to see when
all activity has safely stopped.  This replaces a busy-wait polling
loop in the current code.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Alan Stern 2012-07-11 11:22:31 -04:00 • committed by Greg Kroah-Hartman

parent df2022553d

commit bf6387bcd1

3 changed files with 38 additions and 10 deletions

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20

drivers/usb/host/ehci-hcd.c

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26

drivers/usb/host/ehci-timer.c

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2

drivers/usb/host/ehci.h

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