From: Dedy Lansky <dlansky@codeaurora.org>
Date: Fri, 26 Apr 2019 15:43:36 +0000 (+0300)
Subject: wil6210: check rx_buff_mgmt before accessing it
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d6a553c0c61b0b0219764e4d4fc14e385085f374;p=linux.git

wil6210: check rx_buff_mgmt before accessing it

Make sure rx_buff_mgmt is initialized before accessing it.

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---

diff --git a/drivers/net/wireless/ath/wil6210/txrx_edma.c b/drivers/net/wireless/ath/wil6210/txrx_edma.c
index f37a2056ad21c..6140db5960c36 100644
--- a/drivers/net/wireless/ath/wil6210/txrx_edma.c
+++ b/drivers/net/wireless/ath/wil6210/txrx_edma.c
@@ -269,6 +269,9 @@ static void wil_move_all_rx_buff_to_free_list(struct wil6210_priv *wil,
 	struct list_head *active = &wil->rx_buff_mgmt.active;
 	dma_addr_t pa;
 
+	if (!wil->rx_buff_mgmt.buff_arr)
+		return;
+
 	while (!list_empty(active)) {
 		struct wil_rx_buff *rx_buff =
 			list_first_entry(active, struct wil_rx_buff, list);