linux-kernel - [PATCH 4.19 176/639] net: phy: fixed_phy: Fix fixed

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Message-Id: <20200124093109.232533274@linuxfoundation.org>
Date:   Fri, 24 Jan 2020 10:25:46 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Andrew Lunn <andrew@...n.ch>,
        Moritz Fischer <mdf@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 176/639] net: phy: fixed_phy: Fix fixed_phy not checking GPIO

From: Moritz Fischer <mdf@...nel.org>

[ Upstream commit 8f289805616e81f7c1690931aa8a586c76f4fa88 ]

Fix fixed_phy not checking GPIO if no link_update callback
is registered.

In the original version all users registered a link_update
callback so the issue was masked.

Fixes: a5597008dbc2 ("phy: fixed_phy: Add gpio to determine link up/down.")
Reviewed-by: Andrew Lunn <andrew@...n.ch>
Signed-off-by: Moritz Fischer <mdf@...nel.org>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/phy/fixed_phy.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/phy/fixed_phy.c b/drivers/net/phy/fixed_phy.c
index 67b260877f305..59820164502eb 100644
--- a/drivers/net/phy/fixed_phy.c
+++ b/drivers/net/phy/fixed_phy.c
@@ -67,11 +67,11 @@ static int fixed_mdio_read(struct mii_bus *bus, int phy_addr, int reg_num)
 			do {
 				s = read_seqcount_begin(&fp->seqcount);
 				/* Issue callback if user registered it. */
-				if (fp->link_update) {
+				if (fp->link_update)
 					fp->link_update(fp->phydev->attached_dev,
 							&fp->status);
-					fixed_phy_update(fp);
-				}
+				/* Check the GPIO for change in status */
+				fixed_phy_update(fp);
 				state = fp->status;
 			} while (read_seqcount_retry(&fp->seqcount, s));
 
-- 
2.20.1