linux-kernel - [PATCH net v2] r8152: autoresume before setting MAC address

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Message-ID: <1394712342-15778-56-Taiwan-albertk@realtek.com>
Date:	Thu, 2 Oct 2014 17:03:12 +0800
From:	Hayes Wang <hayeswang@...ltek.com>
To:	<netdev@...r.kernel.org>
CC:	<nic_swsd@...ltek.com>, <linux-kernel@...r.kernel.org>,
	<linux-usb@...r.kernel.org>, Hayes Wang <hayeswang@...ltek.com>
Subject: [PATCH net v2] r8152: autoresume before setting MAC address

Resume the device before setting the MAC address.

Signed-off-by: Hayes Wang <hayeswang@...ltek.com>
---
 drivers/net/usb/r8152.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 604ef21..5ee7582 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -1007,9 +1007,14 @@ static int rtl8152_set_mac_address(struct net_device *netdev, void *p)
 {
 	struct r8152 *tp = netdev_priv(netdev);
 	struct sockaddr *addr = p;
+	int ret = -EADDRNOTAVAIL;
 
 	if (!is_valid_ether_addr(addr->sa_data))
-		return -EADDRNOTAVAIL;
+		goto out1;
+
+	ret = usb_autopm_get_interface(tp->intf);
+	if (ret < 0)
+		goto out1;
 
 	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
 
@@ -1017,7 +1022,9 @@ static int rtl8152_set_mac_address(struct net_device *netdev, void *p)
 	pla_ocp_write(tp, PLA_IDR, BYTE_EN_SIX_BYTES, 8, addr->sa_data);
 	ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_NORAML);
 
-	return 0;
+	usb_autopm_put_interface(tp->intf);
+out1:
+	return ret;
 }
 
 static void read_bulk_callback(struct urb *urb)
-- 
1.9.3

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