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IB/mthca: Fix posting lists of 256 receive requests for Tavor
authorMichael S. Tsirkin <mst@mellanox.co.il>
Thu, 18 May 2006 15:32:54 +0000 (18:32 +0300)
committerRoland Dreier <rolandd@cisco.com>
Thu, 18 May 2006 18:37:03 +0000 (11:37 -0700)
commit23f3bc0f2c1e26215b671499c07047c325d54d9c
treea76e595b413de71d7f6fae1d959566447e1f6c5etree | snapshot
parent0cb4fe8d2658dc0bd1accfbb74ee288a9d6788f4commit | diff
IB/mthca: Fix posting lists of 256 receive requests for Tavor

If we post a list of length 256 exactly, nreq in doorbell gets set to
256 which is wrong: it should be encoded by 0.  This is because we
only zero it out on the next WR, which may not be there.  The solution
is to ring the doorbell after posting a WQE, not before posting the
next one.

Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
drivers/infiniband/hw/mthca/mthca_qp.c diff | blob | history
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