net/cadence_gem: Prefetch rx descriptors ASAP
The real hardware prefetches rx buffer descriptors ASAP and potentially throws relevant interrupts following the fetch even in the absence of a received packet. Reported-by: NDeepika Dhamija <deepika@xilinx.com> Signed-off-by: NPeter Crosthwaite <peter.crosthwaite@xilinx.com> Message-id: 41629e35edfdb1f02f1e401f2c3d0e2e4c9e44b3.1386136219.git.peter.crosthwaite@xilinx.com Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
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