5.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Hayes Wang <hayeswang@xxxxxxxxxxx>
[ 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@xxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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) {
--
2.40.1
