IB/hfi1: Remove atomic operations for SDMA_REQ_HAVE_AHG bit
The AHG index is only accessed in the request call from user space, so there's no need for atomic semantics. Replace atomic operations for SDMA_REQ_HAVE_AHG bit with a test of the AHG index. Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Sebastian Sanchez <sebastian.sanchez@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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