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| author | Brice Goglin <brice@myri.com> | 2008-05-09 02:18:45 +0200 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-05-13 01:30:28 -0400 |
| commit | bd2db0cf2411ebc081d45bde1b7c6cf726b832f2 (patch) | |
| tree | 9c6ad67df7c065e935e9c03e926a4d605ac6d8b2 /drivers/net/myri10ge | |
| parent | c0bf8801535d45df3597839edf864e24f60a4188 (diff) | |
| download | linux-bd2db0cf2411ebc081d45bde1b7c6cf726b832f2.tar.gz linux-bd2db0cf2411ebc081d45bde1b7c6cf726b832f2.tar.bz2 linux-bd2db0cf2411ebc081d45bde1b7c6cf726b832f2.zip | |
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>
Diffstat (limited to 'drivers/net/myri10ge')
| -rw-r--r-- | drivers/net/myri10ge/myri10ge.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c index 4a65e4155c0f..48fe624afa53 100644 --- a/drivers/net/myri10ge/myri10ge.c +++ b/drivers/net/myri10ge/myri10ge.c @@ -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; |