Commit 21949ab7 authored by hayeswang's avatar hayeswang Committed by David S. Miller
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r8152: check tx agg list before spin lock 



Check tx agg list before spin lock to avoid doing spin lock every
times.

Signed-off-by: default avatarHayes Wang <hayeswang@realtek.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 2685d410

drivers/net/usb/r8152.c

+3 −0
Original line number Diff line number Diff line
@@ -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;