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r8152: check budget for r8152_poll()

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[ Upstream commit a7b8d60b37 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Hayes Wang
2023-09-08 15:01:52 +08:00
committed by Greg Kroah-Hartman
parent fbdc4e9908
commit 864da4a5d5
1 changed files with 3 additions and 0 deletions
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3
drivers/net/usb/r8152.c
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@@ -2625,6 +2625,9 @@ static int r8152_poll(struct napi_struct *napi, int budget)
struct r8152 *tp = container_of(napi, struct r8152, napi);
int work_done;
if (!budget)
return 0;
work_done = rx_bottom(tp, budget);
if (work_done < budget) {