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authorDavid S. Miller <davem@davemloft.net>2008-04-06 23:37:08 -0700
committerChris Wright <chrisw@sous-sol.org>2008-04-18 18:53:24 -0700
commitd94e90a23b5f20d4aadf592d049a6de3c3260f07 (patch)
tree39ffb7bbb11d466687a8c22ec6c3b6788f95055e
parentc4e67d75cd6944616acef4a079967d1d23c6a3bd (diff)
SUNGEM: Fix NAPI assertion failure.
Upstream commit: da990a2402aeaee84837f29054c4628eb02f7493 As reported by Johannes Berg: I started getting this warning with recent kernels: [ 773.908927] ------------[ cut here ]------------ [ 773.908954] Badness at net/core/dev.c:2204 ... If we loop more than once in gem_poll(), we'll use more than the real budget in our gem_rx() calls, thus eventually trigger the caller's assertions in net_rx_action(). Subtract "work_done" from "budget" for the second arg to gem_rx() to fix the bug. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Chris Wright <chrisw@sous-sol.org>
-rw-r--r--drivers/net/sungem.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/sungem.c b/drivers/net/sungem.c
index 68872142530b..6fac216e5bb7 100644
--- a/drivers/net/sungem.c
+++ b/drivers/net/sungem.c
@@ -910,7 +910,7 @@ static int gem_poll(struct napi_struct *napi, int budget)
* rx ring - must call napi_disable(), which
* schedule_timeout()'s if polling is already disabled.
*/
- work_done += gem_rx(gp, budget);
+ work_done += gem_rx(gp, budget - work_done);
if (work_done >= budget)
return work_done;