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Date:	Sat,  5 Oct 2013 23:52:22 -0400
From:	Alan Ott <>
To:	Alexander Smirnov <>,
	Dmitry Eremin-Solenikov <>,
	"David S. Miller" <>,
Cc:,,, Alan Ott <>
Subject: [PATCH v1 1/3] 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 <>
 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 42e6dee..66bb4ce 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(

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