diff options
| author | Bjørn Mork <bjorn@mork.no> | 2014-05-16 21:48:29 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-05-16 22:39:02 -0400 |
| commit | 046c65946e3d1bbc70282f43c9cd39b1d430640b (patch) | |
| tree | 72cc86f2980b6865b69473b5980a41e9eb553c9a /drivers/net/usb/cdc_ncm.c | |
| parent | fa83dbeee55865678025b6c1637ca08860209f87 (diff) | |
net: cdc_ncm: do not start timer on an empty skb
We can end up with a freshly allocated tx_curr_skb with no frames
in it. In this case it does not make any sense to start the timer.
This avoids the timer periodically trying to start tx when there
is nothing in the queue.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/usb/cdc_ncm.c')
| -rw-r--r-- | drivers/net/usb/cdc_ncm.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c index 783c4ed96395..2d0caf1eea25 100644 --- a/drivers/net/usb/cdc_ncm.c +++ b/drivers/net/usb/cdc_ncm.c @@ -1069,8 +1069,8 @@ cdc_ncm_fill_tx_frame(struct usbnet *dev, struct sk_buff *skb, __le32 sign) return skb_out; exit_no_skb: - /* Start timer, if there is a remaining skb */ - if (ctx->tx_curr_skb != NULL) + /* Start timer, if there is a remaining non-empty skb */ + if (ctx->tx_curr_skb != NULL && n > 0) cdc_ncm_tx_timeout_start(ctx); return NULL; } |