[PATCH] rsi: fix potential null dereference in rsi_probe()

[Denis Efremov]

The id pointer can be NULL in rsi_probe(). It is checked everywhere except
for the else branch in the idProduct condition. The patch adds NULL check
before the id dereference in the rsi_dbg() call.

Fixes: 54fdb318c111 ("rsi: add new device model for 9116")
Cc: Amitkumar Karwar <amitkar...@gmail.com>
Cc: Siva Rebbagondla <siva8...@gmail.com>
Cc: Kalle Valo <kv...@codeaurora.org>
Signed-off-by: Denis Efremov <efre...@linux.com>
---
 drivers/net/wireless/rsi/rsi_91x_usb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/rsi/rsi_91x_usb.c 
b/drivers/net/wireless/rsi/rsi_91x_usb.c
index 760eaffeebd6..23a1d00b5f38 100644
--- a/drivers/net/wireless/rsi/rsi_91x_usb.c
+++ b/drivers/net/wireless/rsi/rsi_91x_usb.c
@@ -793,7 +793,7 @@ static int rsi_probe(struct usb_interface *pfunction,
                adapter->device_model = RSI_DEV_9116;
        } else {
                rsi_dbg(ERR_ZONE, "%s: Unsupported RSI device id 0x%x\n",
-                       __func__, id->idProduct);
+                       __func__, id ? id->idProduct : 0x0);
                goto err1;
        }
 
-- 
2.21.0