Message ID | 1393934464-23675-6-git-send-email-hayeswang@realtek.com |
---|---|
State | Changes Requested, archived |
Delegated to: | David Miller |
Headers | show |
diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c index 8ecb41b..00b3192 100644 --- a/drivers/net/usb/r8152.c +++ b/drivers/net/usb/r8152.c @@ -1266,6 +1266,9 @@ static struct tx_agg *r8152_get_tx_agg(struct r8152 *tp) struct tx_agg *agg = NULL; unsigned long flags; + if (list_empty(&tp->tx_free)) + return NULL; + spin_lock_irqsave(&tp->tx_lock, flags); if (!list_empty(&tp->tx_free)) { struct list_head *cursor;
Check tx agg list before spin lock to avoid doing spin lock every times. Signed-off-by: Hayes Wang <hayeswang@realtek.com> --- drivers/net/usb/r8152.c | 3 +++ 1 file changed, 3 insertions(+)