From: Ben Hutchings <bhutchings@solarflare.com>
Date: Wed, 25 Nov 2009 16:11:19 +0000 (+0000)
Subject: sfc: Hold MAC lock for longer in efx_init_port()
X-Git-Tag: upstream/snapshot3+hdmi~16449^2~186
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1dfc5ceacd00365a9089e98643f4b26253d5a6aa;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

sfc: Hold MAC lock for longer in efx_init_port()

Although efx_init_port() is only called at probe time and so cannot
race with port reconfiguration, most of the functions it calls can
expect to be called with the MAC lock held.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index 4ebad61..155aa1c 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -737,23 +737,27 @@ static int efx_init_port(struct efx_nic *efx)
 
 	EFX_LOG(efx, "init port\n");
 
+	mutex_lock(&efx->mac_lock);
+
 	rc = efx->phy_op->init(efx);
 	if (rc)
-		return rc;
-	mutex_lock(&efx->mac_lock);
+		goto fail1;
 	efx->phy_op->reconfigure(efx);
 	rc = falcon_switch_mac(efx);
-	mutex_unlock(&efx->mac_lock);
 	if (rc)
-		goto fail;
+		goto fail2;
 	efx->mac_op->reconfigure(efx);
 
 	efx->port_initialized = true;
 	efx_stats_enable(efx);
+
+	mutex_unlock(&efx->mac_lock);
 	return 0;
 
-fail:
+fail2:
 	efx->phy_op->fini(efx);
+fail1:
+	mutex_unlock(&efx->mac_lock);
 	return rc;
 }