diff options
| author | Roland Dreier <rolandd@cisco.com> | 2006-05-17 07:48:07 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2006-05-17 07:48:07 -0700 |
| commit | 1db76c14d215c8b26024dd532de3dcaf66ea30f7 (patch) | |
| tree | 6c9c22c450e20e98b75e835930c897c99477c788 /drivers/infiniband/hw | |
| parent | 032ebf2620ef99a4fedaa0f77dc2272095ac5863 (diff) | |
IB/mthca: Make fw_cmd_doorbell default to 0
Setting fw_cmd_doorbell allows FW command to be queued using posted
writes instead of requiring polling on a "go" bit, so it should be a
performance boost. However, the option causes problems with at least
some device/firmware combinations, so set the default to 0 until we
understand what's going on better.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw')
| -rw-r--r-- | drivers/infiniband/hw/mthca/mthca_cmd.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_cmd.c b/drivers/infiniband/hw/mthca/mthca_cmd.c index 1985b5dfa48..798e13e14fa 100644 --- a/drivers/infiniband/hw/mthca/mthca_cmd.c +++ b/drivers/infiniband/hw/mthca/mthca_cmd.c @@ -182,7 +182,7 @@ struct mthca_cmd_context { u8 status; }; -static int fw_cmd_doorbell = 1; +static int fw_cmd_doorbell = 0; module_param(fw_cmd_doorbell, int, 0644); MODULE_PARM_DESC(fw_cmd_doorbell, "post FW commands through doorbell page if nonzero " "(and supported by FW)"); |