linux-kernel - [PATCH 4.19 118/361] mt76x2u: run device cleanup routine if resume fails

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Message-Id: <20181111221636.512561607@linuxfoundation.org>
Date:   Sun, 11 Nov 2018 14:17:45 -0800
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Lorenzo Bianconi <lorenzo.bianconi@...hat.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 118/361] mt76x2u: run device cleanup routine if resume fails

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Lorenzo Bianconi <lorenzo.bianconi@...hat.com>

[ Upstream commit 9b2fd48d36e25b9be9ddb8be8cc1eb263a1d1843 ]

Cleanup {tx,rx} and mcu queues if resume operation fails

Fixes: ee676cd5017c ("mt76: add driver code for MT76x2u based devices")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@...hat.com>
Signed-off-by: Kalle Valo <kvalo@...eaurora.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/wireless/mediatek/mt76/mt76x2_usb.c |   14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

--- a/drivers/net/wireless/mediatek/mt76/mt76x2_usb.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76x2_usb.c
@@ -107,16 +107,24 @@ static int __maybe_unused mt76x2u_resume
 			       mt76u_mcu_complete_urb,
 			       &usb->mcu.cmpl);
 	if (err < 0)
-		return err;
+		goto err;
 
 	err = mt76u_submit_rx_buffers(&dev->mt76);
 	if (err < 0)
-		return err;
+		goto err;
 
 	tasklet_enable(&usb->rx_tasklet);
 	tasklet_enable(&usb->tx_tasklet);
 
-	return mt76x2u_init_hardware(dev);
+	err = mt76x2u_init_hardware(dev);
+	if (err < 0)
+		goto err;
+
+	return 0;
+
+err:
+	mt76x2u_cleanup(dev);
+	return err;
 }
 
 MODULE_DEVICE_TABLE(usb, mt76x2u_device_table);