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[net-next,6/8] cxgb4: Return error if setup_rss is called before probe

Message ID 1445418597-771-7-git-send-email-hariprasad@chelsio.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Hariprasad Shenai Oct. 21, 2015, 9:09 a.m. UTC 
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
---
 drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)
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Patch

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c
index b7b8c46..59374dc 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c
@@ -1015,11 +1015,15 @@  static int set_rss_table(struct net_device *dev, const u32 *p, const u8 *key,
 	if (!p)
 		return 0;
 
-	for (i = 0; i < pi->rss_size; i++)
-		pi->rss[i] = p[i];
-	if (pi->adapter->flags & FULL_INIT_DONE)
+	/* Interface must be brought up atleast once */
+	if (pi->adapter->flags & FULL_INIT_DONE) {
+		for (i = 0; i < pi->rss_size; i++)
+			pi->rss[i] = p[i];
+
 		return cxgb4_write_rss(pi, pi->rss);
-	return 0;
+	}
+
+	return -EPERM;
 }
 
 static int get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info,