myri10ge: add barrier in myri10ge_send_cmd
Add a barrier() in the usleep() loop in myri10ge_send_cmd(). Without the barrier, some mips machine never notices that the firmware has DMA'ed the response. Signed-off-by: Brice Goglin <brice@myri.com> Signed-off-by: Andrew Gallatin <gallatin@myri.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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@ -361,8 +361,10 @@ myri10ge_send_cmd(struct myri10ge_priv *mgp, u32 cmd,
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for (sleep_total = 0;
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sleep_total < 1000
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&& response->result == htonl(MYRI10GE_NO_RESPONSE_RESULT);
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sleep_total += 10)
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sleep_total += 10) {
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udelay(10);
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mb();
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}
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} else {
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/* use msleep for most command */
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for (sleep_total = 0;
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