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Date: Tue, 21 May 2013 22:01:18 -0400 From: Alan Ott <alan@...nal11.us> To: david@...weele.net Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, linux-zigbee-devel@...ts.sourceforge.net, Alan Ott <alan@...nal11.us> Subject: [PATCH beta 1] 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 <alan@...nal11.us> --- 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 556151d..0ea2a5a 100644 --- a/drivers/net/ieee802154/mrf24j40.c +++ b/drivers/net/ieee802154/mrf24j40.c @@ -345,6 +345,8 @@ 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) @@ -355,8 +357,6 @@ 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, -- 1.7.11.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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