[PATCH net-next] net: cdc_ncm: error path lock fix

[Bjørn Mork]

Fixes the sparse warning

 drivers/net/usb/cdc_ncm.c:836:9: warning: context imbalance in 
'cdc_ncm_txpath_bh' - different lock contexts for basic block

Signed-off-by: Bjørn Mork <bj...@mork.no>
---
 drivers/net/usb/cdc_ncm.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
index 682b17a..11370fe 100644
--- a/drivers/net/usb/cdc_ncm.c
+++ b/drivers/net/usb/cdc_ncm.c
@@ -842,6 +842,8 @@ static void cdc_ncm_txpath_bh(unsigned long param)
                netif_tx_lock_bh(ctx->netdev);
                usbnet_start_xmit(NULL, ctx->netdev);
                netif_tx_unlock_bh(ctx->netdev);
+       } else {
+               spin_unlock_bh(&ctx->mtx);
        }
 }
 
-- 
1.7.10.4

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