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authorJarek Poplawski <jarkao2@gmail.com>2008-12-16 15:42:20 -0800
committerDavid S. Miller <davem@davemloft.net>2008-12-16 15:42:20 -0800
commit9a3de25544dadab1971847f28f33b1cd0d1770a6 (patch)
treecf5f2cfe90b0b05f45f2625d99d130a0a5c30f9b /drivers/net
parentbb5f133dbc4f04b6388715d364ae5865455166c2 (diff)
downloadlinux-linaro-stable-9a3de25544dadab1971847f28f33b1cd0d1770a6.tar.gz
drivers/net: starfire: Fix napi ->poll() weight handling
starfire napi ->poll() handler can return work == weight after calling netif_rx_complete() (if there is no more work). It is illegal and this patch fixes it. Reported-by: Alexander Huemer <alexander.huemer@sbg.ac.at> Tested-by: Alexander Huemer <alexander.huemer@sbg.ac.at> Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/starfire.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/starfire.c b/drivers/net/starfire.c
index 1d2ef8f47780..5a40f2d78beb 100644
--- a/drivers/net/starfire.c
+++ b/drivers/net/starfire.c
@@ -1509,6 +1509,11 @@ static int __netdev_rx(struct net_device *dev, int *quota)
desc->status = 0;
np->rx_done = (np->rx_done + 1) % DONE_Q_SIZE;
}
+
+ if (*quota == 0) { /* out of rx quota */
+ retcode = 1;
+ goto out;
+ }
writew(np->rx_done, np->base + CompletionQConsumerIdx);
out: