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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-09-19 11:05:43 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-09-19 11:05:43 +0200
commit3a383cc0b8cc33af188fe2062b6ba5a69af25fa7 (patch)
tree1e264bf17970cb54ddab4158221ffa7c23e00b48 /drivers/usb/gadget
parentc51f2ff0075b77f272da93b7155aa666a77c8fe7 (diff)
downloadlinux-3a383cc0b8cc33af188fe2062b6ba5a69af25fa7.tar.gz
Revert "usb: gadget: NCM: Protect dev->port_usb using dev->lock"
This reverts commit c9ffc78745f89e300fe704348dd8e6800acf4d18 as it was
reported to be broken.

Cc: Felipe Balbi <felipe.balbi@linux.intel.com>
Cc: Jim Baxter <jim_baxter@mentor.com>
Cc: Harish Jenny K N <harish_kandiga@mentor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/gadget')
-rw-r--r--drivers/usb/gadget/function/u_ether.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c
index 8cb08033b7c1..9c8c9ed1dc9e 100644
--- a/drivers/usb/gadget/function/u_ether.c
+++ b/drivers/usb/gadget/function/u_ether.c
@@ -553,16 +553,14 @@ static netdev_tx_t eth_start_xmit(struct sk_buff *skb,
 		spin_lock_irqsave(&dev->lock, flags);
 		if (dev->port_usb)
 			skb = dev->wrap(dev->port_usb, skb);
+		spin_unlock_irqrestore(&dev->lock, flags);
 		if (!skb) {
 			/* Multi frame CDC protocols may store the frame for
 			 * later which is not a dropped frame.
 			 */
 			if (dev->port_usb &&
-					dev->port_usb->supports_multi_frame) {
-				spin_unlock_irqrestore(&dev->lock, flags);
+					dev->port_usb->supports_multi_frame)
 				goto multiframe;
-			}
-			spin_unlock_irqrestore(&dev->lock, flags);
 			goto drop;
 		}
 	}
@@ -580,7 +578,6 @@ static netdev_tx_t eth_start_xmit(struct sk_buff *skb,
 		req->zero = 0;
 	else
 		req->zero = 1;
-	spin_unlock_irqrestore(&dev->lock, flags);
 
 	/* use zlp framing on tx for strict CDC-Ether conformance,
 	 * though any robust network rx path ignores extra padding.