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authorArthur Jones <arthur.jones@qlogic.com>2007-09-14 12:22:49 -0700
committerRoland Dreier <rolandd@cisco.com>2007-10-09 20:56:23 -0700
commit70c51da2c4f84317bb13a2b564600afdcebd686f (patch)
treed7c39e3efaf6c90482cfe9d0e85012c3c9c511a7 /drivers/infiniband/hw/ipath/ipath_iba6110.c
parent542869a17eee2edf389273f40f757aa4e662b3da (diff)
IB/ipath: Use counters in ipath_poll and cleanup interrupts in ipath_close
ipath_poll() suffered from a couple subtle bugs. Under the right conditions we could leave recv interrupts enabled on an ipath user context on close, thereby taking potentially unwanted interrupts on the next open -- this is fixed by unconditionally turning off recv interrupts on close. Also, we now use counters rather than set/clear bits which allows us to make sure we catch all interrupts at the cost of changing the semantics slightly (it's now give me all events since the last time I called poll() rather than give me all events since I called _this_ poll routine). We also added some memory barriers which may help ensure we get all notifications in a timely manner. Signed-off-by: Arthur Jones <arthur.jones@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_iba6110.c')
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