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r8152: check budget for r8152_poll()
According to the document of napi, there is no rx process when the
budget is 0. Therefore, r8152_poll() has to return 0 directly when the
budget is equal to 0.
Fixes: d2187f8e44
("r8152: divide the tx and rx bottom functions")
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -2636,6 +2636,9 @@ static int r8152_poll(struct napi_struct *napi, int budget)
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struct r8152 *tp = container_of(napi, struct r8152, napi);
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int work_done;
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if (!budget)
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return 0;
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work_done = rx_bottom(tp, budget);
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if (work_done < budget) {
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