IB/mthca: Avoid alignment traps when writing doorbells

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Architectures such as ia64 see alignment traps when doing a 64-bit 
read from __be32 doorbell[2] arrays to do doorbell writes in 
mthca_write64().  Fix this by just passing the two halves of the 
doorbell value into mthca_write64().  This actually improves the 
generated code by allowing the compiler to see what's going on better.

Signed-off-by: Roland Dreier <rolandd@cisco.com>

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This commit is contained in:

Roland Dreier 2007-10-14 20:40:27 -07:00

parent 744ea922c9

commit ab8403c424

5 changed files with 47 additions and 96 deletions

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53

drivers/infiniband/hw/mthca/mthca_cq.c

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13

drivers/infiniband/hw/mthca/mthca_doorbell.h

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21

drivers/infiniband/hw/mthca/mthca_eq.c

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45

drivers/infiniband/hw/mthca/mthca_qp.c

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11

drivers/infiniband/hw/mthca/mthca_srq.c

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