[PATCH] net: rtl8192c: fix a potential NULL pointer dereference

[Kangjie Lu]

In case dev_alloc_skb fails, the fix safely returns to avoid
potential NULL pointer dereference.

Signed-off-by: Kangjie Lu <kjlu@xxxxxxx>
---
 drivers/net/wireless/realtek/rtlwifi/rtl8192c/fw_common.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192c/fw_common.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192c/fw_common.c
index 18c76990a089..9042fc044c7e 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8192c/fw_common.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192c/fw_common.c
@@ -623,6 +623,9 @@ void rtl92c_set_fw_rsvdpagepkt(struct ieee80211_hw *hw,
 		      u1rsvdpageloc, 3);
 
 	skb = dev_alloc_skb(totalpacketlen);
+	if (!skb)
+		return;
+
 	skb_put_data(skb, &reserved_page_packet, totalpacketlen);
 
 	if (cmd_send_packet)
-- 
2.17.1