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From:   Kangjie Lu <kjlu@umn.edu>
To:     kjlu@umn.edu
Cc:     pakki001@umn.edu, Arend van Spriel <arend.vanspriel@broadcom.com>,
        Franky Lin <franky.lin@broadcom.com>,
        Hante Meuleman <hante.meuleman@broadcom.com>,
        Chi-Hsien Lin <chi-hsien.lin@cypress.com>,
        Wright Feng <wright.feng@cypress.com>,
        Kalle Valo <kvalo@codeaurora.org>,
        "David S. Miller" <davem@davemloft.net>,
        Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>,
        linux-wireless@vger.kernel.org,
        brcm80211-dev-list.pdl@broadcom.com,
        brcm80211-dev-list@cypress.com, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH] net: brcm80211: add a check for the status of usb_register
Date:   Tue, 25 Dec 2018 19:22:24 -0600
Message-Id: <20181226012227.70524-1-kjlu@umn.edu>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

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>
---
 drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
index a4308c6e72d7..76cfaf6999c8 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
@@ -1550,6 +1550,10 @@ 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);
 }
-- 
2.17.2 (Apple Git-113)