diff mbox series

[5.17,0741/1126] staging: r8188eu: fix endless loop in recv_func

Message ID 20220405070429.336813771@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman April 5, 2022, 7:24 a.m. UTC 
From: Martin Kaiser <martin@kaiser.cx>

[ Upstream commit 1327fcf175fa63d3b7a058b8148ed7714acdc035 ]

Fix an endless loop in recv_func. If pending_frame is not NULL, we're
stuck in the while loop forever. We have to call rtw_alloc_recvframe
each time we loop.

Fixes: 15865124feed ("staging: r8188eu: introduce new core dir for RTL8188eu driver")
Reported-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220226181457.1138035-4-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/staging/r8188eu/core/rtw_recv.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
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Patch

diff --git a/drivers/staging/r8188eu/core/rtw_recv.c b/drivers/staging/r8188eu/core/rtw_recv.c
index 51a13262a226..d120d61454a3 100644
--- a/drivers/staging/r8188eu/core/rtw_recv.c
+++ b/drivers/staging/r8188eu/core/rtw_recv.c
@@ -1853,8 +1853,7 @@  static int recv_func(struct adapter *padapter, struct recv_frame *rframe)
 		struct recv_frame *pending_frame;
 		int cnt = 0;
 
-		pending_frame = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue);
-		while (pending_frame) {
+		while ((pending_frame = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue))) {
 			cnt++;
 			recv_func_posthandle(padapter, pending_frame);
 		}