5.4-stable review patch. If anyone has any objections, please let me know.
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From: Hayes Wang hayeswang@realtek.com
[ 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: d2187f8e4454 ("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 --- drivers/net/usb/r8152.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c index b0412d14e8f6c..a19f0431e6f99 100644 --- a/drivers/net/usb/r8152.c +++ b/drivers/net/usb/r8152.c @@ -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) {