[SUNGEM]: Fix NAPI assertion failure.
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>
diff --git a/drivers/net/sungem.c b/drivers/net/sungem.c
index 9721279..4291458 100644
--- a/drivers/net/sungem.c
+++ b/drivers/net/sungem.c
@@ -912,7 +912,7 @@
* 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;