netdev - [patch -next] renesas: missing unlock on error path

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Message-ID: <20150624143254.GG1702@mwanda>
Date:	Wed, 24 Jun 2015 17:32:54 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Masaru Nagai <masaru.nagai.vx@...esas.com>
Cc:	Masaru Nagai <masaru.nagai.vx@...esas.com>,
	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
	netdev@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [patch -next] renesas: missing unlock on error path

We need to unlock before returning here.

Fixes: a0d2f20650e8 ('Renesas Ethernet AVB PTP clock driver')
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

diff --git a/drivers/net/ethernet/renesas/ravb_ptp.c b/drivers/net/ethernet/renesas/ravb_ptp.c
index 42656da..7a8ce92 100644
--- a/drivers/net/ethernet/renesas/ravb_ptp.c
+++ b/drivers/net/ethernet/renesas/ravb_ptp.c
@@ -116,8 +116,10 @@ static int ravb_ptp_adjfreq(struct ptp_clock_info *ptp, s32 ppb)
 	priv->ptp.current_addend = addend;
 
 	gccr = ravb_read(ndev, GCCR);
-	if (gccr & GCCR_LTI)
+	if (gccr & GCCR_LTI) {
+		spin_unlock_irqrestore(&priv->lock, flags);
 		return -EBUSY;
+	}
 	ravb_write(ndev, addend & GTI_TIV, GTI);
 	ravb_write(ndev, gccr | GCCR_LTI, GCCR);
 
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