From 9757f1d2e0b4e7ff59e76c2fadbf819e18f3f884 Mon Sep 17 00:00:00 2001 From: Alan Ott <alan@signal11.us> Date: Sat, 5 Oct 2013 23:52:22 -0400 Subject: [PATCH] mrf24j40: Move INIT_COMPLETION() to before packet transmission This avoids a race condition where complete(tx_complete) could be called before tx_complete is initialized. Signed-off-by: Alan Ott <alan@signal11.us> Signed-off-by: David S. Miller <davem@davemloft.net> --- drivers/net/ieee802154/mrf24j40.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ieee802154/mrf24j40.c b/drivers/net/ieee802154/mrf24j40.c index 42e6deee6db5..66bb4ceaabe8 100644 --- a/drivers/net/ieee802154/mrf24j40.c +++ b/drivers/net/ieee802154/mrf24j40.c @@ -344,6 +344,8 @@ static int mrf24j40_tx(struct ieee802154_dev *dev, struct sk_buff *skb) if (ret) goto err; + INIT_COMPLETION(devrec->tx_complete); + /* Set TXNTRIG bit of TXNCON to send packet */ ret = read_short_reg(devrec, REG_TXNCON, &val); if (ret) @@ -354,8 +356,6 @@ static int mrf24j40_tx(struct ieee802154_dev *dev, struct sk_buff *skb) val |= 0x4; write_short_reg(devrec, REG_TXNCON, val); - INIT_COMPLETION(devrec->tx_complete); - /* Wait for the device to send the TX complete interrupt. */ ret = wait_for_completion_interruptible_timeout( &devrec->tx_complete,