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From: Florian Fainelli <f.fainelli@gmail.com>
To: netdev@vger.kernel.org
Cc: davem@davemloft.net, Florian Fainelli <f.fainelli@gmail.com>
Subject: [PATCH net-next v2 09/11] net: bcmgenet: fix bcmgenet_wol_resume
Date: Mon, 21 Jul 2014 15:29:27 -0700	[thread overview]
Message-ID: <1405981769-24618-10-git-send-email-f.fainelli@gmail.com> (raw)
In-Reply-To: <1405981769-24618-1-git-send-email-f.fainelli@gmail.com>

bcmgenet_wol_resume() will create an unbalanced clock state for the
wol_clk clock pointer since everywhere else in the code, we always call
clk_prepare_enable() and clk_disable_unprepare(). This function also
calls init_umac() which is neither correct nor necessary since
bcmgenet_resume() and bcmgenet_open() already does that.

Finally calling bcmgenet_wol_resume() in bcmgenet_open() is not correct,
since the interface would not have been able to put us in Wake-on-LAN
mode if it was not UP before.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 drivers/net/ethernet/broadcom/genet/bcmgenet.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index 319b94381d2e..1925ae1dc1e6 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -1965,14 +1965,8 @@ static void bcmgenet_set_hw_addr(struct bcmgenet_priv *priv,
 
 static int bcmgenet_wol_resume(struct bcmgenet_priv *priv)
 {
-	int ret;
-
 	/* From WOL-enabled suspend, switch to regular clock */
-	clk_disable(priv->clk_wol);
-	/* init umac registers to synchronize s/w with h/w */
-	ret = init_umac(priv);
-	if (ret)
-		return ret;
+	clk_disable_unprepare(priv->clk_wol);
 
 	phy_init_hw(priv->phydev);
 	/* Speed settings must be restored */
-- 
1.9.1

  parent reply	other threads:[~2014-07-21 22:29 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-07-21 22:29 [PATCH net-next v2 00/11] net: bcmgenet: PM and Wake-on-LAN Florian Fainelli
2014-07-21 22:29 ` [PATCH net-next v2 01/11] net: bcmgenet: remove wol_enabled conditional code Florian Fainelli
2014-07-21 22:29 ` [PATCH net-next v2 02/11] net: bcmgenet: add umac_enable_set helper Florian Fainelli
2014-07-21 22:29 ` [PATCH net-next v2 03/11] net: bcmgenet: modularize bcmgenet_{open,close} Florian Fainelli
2014-07-21 22:29 ` [PATCH net-next v2 04/11] net: bcmgenet: add suspend/resume callbacks Florian Fainelli
2014-07-21 22:29 ` [PATCH net-next v2 05/11] net: bcmgenet: request Wake-on-LAN interrupt Florian Fainelli
2014-07-21 22:29 ` [PATCH net-next v2 06/11] net: bcmgenet: add Wake-on-LAN support code Florian Fainelli
2014-07-21 22:29 ` [PATCH net-next v2 07/11] net: bcmgenet: handle GENET_POWER_WOL_MAGIC Florian Fainelli
2014-07-21 22:29 ` [PATCH net-next v2 08/11] net: bcmgenet: handle UMAC_IRQ_MPD_R interrupt bit Florian Fainelli
2014-07-21 22:29 ` Florian Fainelli [this message]
2014-07-21 22:29 ` [PATCH net-next v2 10/11] net: bcmgenet: suspend and resume from Wake-on-LAN Florian Fainelli
2014-07-21 22:29 ` [PATCH net-next v2 11/11] net: bcmgenet: hook ethtool set/get_wol operations Florian Fainelli
2014-07-21 23:07 ` [PATCH net-next v2 00/11] net: bcmgenet: PM and Wake-on-LAN David Miller
2014-07-22 20:20 ` Francois Romieu
2014-07-22 20:29   ` Florian Fainelli

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