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| author | Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com> | 2013-12-23 15:34:29 -0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-01-03 19:27:57 -0500 |
| commit | 940d9d34a5467c2e2574866eb009d4cb61e27299 (patch) | |
| tree | c93a0751e8543812ef62ce1f2d9d4b9aef8e98a2 /drivers/net/ethernet/chelsio/cxgb4/sge.c | |
| parent | aca5f58f9ba803ec8c2e6bcf890db17589e8dfcc (diff) | |
| download | lwn-940d9d34a5467c2e2574866eb009d4cb61e27299.tar.gz lwn-940d9d34a5467c2e2574866eb009d4cb61e27299.zip | |
cxgb4: allow large buffer size to have page size
Since commit 52367a763d8046190754ab43743e42638564a2d1
("cxgb4/cxgb4vf: Code cleanup to enable T4 Configuration File support"),
we have failures like this during cxgb4 probe:
cxgb4 0000:01:00.4: bad SGE FL page buffer sizes [65536, 65536]
cxgb4: probe of 0000:01:00.4 failed with error -22
This happens whenever software parameters are used, without a
configuration file. That happens when the hardware was already
initialized (after kexec, or after csiostor is loaded).
It happens that these values are acceptable, rendering fl_pg_order equal
to 0, which is the case of a hard init when the page size is equal or
larger than 65536.
Accepting fl_large_pg equal to fl_small_pg solves the issue, and
shouldn't cause any trouble besides a possible performance reduction
when smaller pages are used. And that can be fixed by a configuration
file.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/chelsio/cxgb4/sge.c')
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/sge.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c index cc380c36e1a8..cc3511a5cd0c 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/sge.c +++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c @@ -2581,7 +2581,7 @@ static int t4_sge_init_soft(struct adapter *adap) #undef READ_FL_BUF if (fl_small_pg != PAGE_SIZE || - (fl_large_pg != 0 && (fl_large_pg <= fl_small_pg || + (fl_large_pg != 0 && (fl_large_pg < fl_small_pg || (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); |