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authorSarah Sharp <sarah.a.sharp@linux.intel.com>2009-07-27 12:03:40 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2009-07-28 14:31:12 -0700
commit2d83109be62edd9647c45d7ed2b916b03974a7ec (patch)
tree77320544c5000b29b61140bde6fa6d1688171cc1 /kernel
parent62889610f5591005bed9517360e17531684f72d0 (diff)
USB: xhci: Correct Event Handler Busy flag usage.
The Event Handler Busy bit in the event ring dequeue pointer is write 1 to clear. Fix the interrupt service routine to clear that bit after the event handler has run. xhci_set_hc_event_deq() is designed to update the event ring dequeue pointer without changing any of the four reserved bits in the lower nibble. The event handler busy (EHB) bit is write one to clear, so the new value must always contain a zero in that bit in order to preserve the EHB value. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'kernel')
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