From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jisheng Zhang Subject: [PATCH v2] net: phy: marvell: clear wol event before setting it Date: Mon, 23 Apr 2018 15:22:49 +0800 Message-ID: <20180423152249.5f1deb65@xhacker.debian> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Jingju Hou To: Andrew Lunn , Florian Fainelli , "David S. Miller" , Bhadram Varka Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: Jingju Hou If WOL event happened once, the LED[2] interrupt pin will not be cleared unless we read the CSISR register. If interrupts are in use, the normal interrupt handling will clear the WOL event. Let's clear the WOL event before enabling it if !phy_interrupt_is_valid(). Signed-off-by: Jingju Hou Signed-off-by: Jisheng Zhang --- Since v1: - reuse MII_M1011_IEVENT, suggested by Bhadram Varka - make read conditional on !phy_interrupt_is_valid(), suggested by Andrew drivers/net/phy/marvell.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c index c22e8e383247..25e2a099b71c 100644 --- a/drivers/net/phy/marvell.c +++ b/drivers/net/phy/marvell.c @@ -1393,6 +1393,15 @@ static int m88e1318_set_wol(struct phy_device *phydev, if (err < 0) goto error; + /* If WOL event happened once, the LED[2] interrupt pin + * will not be cleared unless we reading the interrupt status + * register. If interrupts are in use, the normal interrupt + * handling will clear the WOL event. Clear the WOL event + * before enabling it if !phy_interrupt_is_valid() + */ + if (!phy_interrupt_is_valid(phydev)) + phy_read(phydev, MII_M1011_IEVENT); + /* Enable the WOL interrupt */ err = __phy_modify(phydev, MII_88E1318S_PHY_CSIER, 0, MII_88E1318S_PHY_CSIER_WOL_EIE); -- 2.17.0