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[SUNGEM]: Fix NAPI assertion failure.

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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>
This commit is contained in:
David S. Miller 2008-03-23 03:35:12 -07:00
parent 2572c149a2
commit da990a2402
1 changed files with 1 additions and 1 deletions
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2
drivers/net/sungem.c
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@ -912,7 +912,7 @@ 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;