diff options
| author | Kumar Sanghvi <kumaras@chelsio.com> | 2014-03-13 19:20:46 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-03-13 22:36:05 +0400 |
| commit | 92ddcc7b8f1c14aa9f3ec98b14bcd421b21b01e4 (patch) | |
| tree | 0a9e2b936dcf308593ea98607d9383f519f78113 /drivers | |
| parent | 433131ba03c511a84e1fda5669c70cf8b44702e1 (diff) | |
| download | linux-92ddcc7b8f1c14aa9f3ec98b14bcd421b21b01e4.tar.xz | |
cxgb4: Fix some small bugs in t4_sge_init_soft() when our Page Size is 64KB
We'd come in with SGE_FL_BUFFER_SIZE[0] and [1] both equal to 64KB and the
extant logic would flag that as an error.
Based on original work by Casey Leedom <leedom@chelsio.com>
Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/sge.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c index af76b25bb606..3a2ecd84afee 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/sge.c +++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c @@ -2596,11 +2596,19 @@ static int t4_sge_init_soft(struct adapter *adap) fl_small_mtu = READ_FL_BUF(RX_SMALL_MTU_BUF); fl_large_mtu = READ_FL_BUF(RX_LARGE_MTU_BUF); + /* We only bother using the Large Page logic if the Large Page Buffer + * is larger than our Page Size Buffer. + */ + if (fl_large_pg <= fl_small_pg) + fl_large_pg = 0; + #undef READ_FL_BUF + /* The Page Size Buffer must be exactly equal to our Page Size and the + * Large Page Size Buffer should be 0 (per above) or a power of 2. + */ if (fl_small_pg != PAGE_SIZE || - (fl_large_pg != 0 && (fl_large_pg < fl_small_pg || - (fl_large_pg & (fl_large_pg-1)) != 0))) { + (fl_large_pg & (fl_large_pg-1)) != 0) { dev_err(adap->pdev_dev, "bad SGE FL page buffer sizes [%d, %d]\n", fl_small_pg, fl_large_pg); return -EINVAL; |