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From 42daad3343be4a4e1ee03e30a5f5cc731dadfef5 Mon Sep 17 00:00:00 2001
From: Kangjie Lu <kjlu@umn.edu>
Date: Tue, 25 Dec 2018 19:22:24 -0600
Subject: [PATCH] brcmfmac: add a check for the status of usb_register

usb_register() may fail, so let's check its status and issue an error
message if it fails.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
 drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
@@ -1552,6 +1552,10 @@ void brcmf_usb_exit(void)
 
 void brcmf_usb_register(void)
 {
+       int ret;
+
        brcmf_dbg(USB, "Enter\n");
-       usb_register(&brcmf_usbdrvr);
+       ret = usb_register(&brcmf_usbdrvr);
+       if (ret)
+               brcmf_err("usb_register failed %d\n", ret);
 }