Commit c5655334 authored Sep 08, 2023 by Hayes Wang Committed by Greg Kroah-Hartman Sep 23, 2023

r8152: check budget for r8152_poll()



[ Upstream commit a7b8d60b37237680009dd0b025fe8c067aba0ee3 ]

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: d2187f8e ("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>

parent 653fbddb

drivers/net/usb/r8152.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -2253,6 +2253,9 @@ 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) {