Commit da990a24 authored Mar 23, 2008 by David S. Miller

[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>

parent 2572c149

drivers/net/sungem.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;