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myri10ge: add barrier in myri10ge_send_cmd

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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>
This commit is contained in:
Brice Goglin 2008-05-09 02:18:45 +02:00 committed by Jeff Garzik
parent c0bf880153
commit bd2db0cf24
1 changed files with 3 additions and 1 deletions
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4
drivers/net/myri10ge/myri10ge.c
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@ -361,8 +361,10 @@ myri10ge_send_cmd(struct myri10ge_priv *mgp, u32 cmd,
for (sleep_total = 0;
sleep_total < 1000
&& response->result == htonl(MYRI10GE_NO_RESPONSE_RESULT);
sleep_total += 10)
sleep_total += 10) {
udelay(10);
mb();
}
} else {
/* use msleep for most command */
for (sleep_total = 0;