From: Dan Carpenter <dan.carpenter@oracle.com>
To: Andrew Lunn <andrew@lunn.ch>, Michael Walle <michael@walle.cc>
Cc: Heiner Kallweit <hkallweit1@gmail.com>,
Russell King <linux@armlinux.org.uk>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
netdev@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [PATCH net-next] net: phy: icplus: Call phy_restore_page() when phy_select_page() fails
Date: Wed, 17 Feb 2021 09:17:59 +0300 [thread overview]
Message-ID: <YCy1F5xKFJAaLBFw@mwanda> (raw)
Smatch warns that there is a locking issue in this function:
drivers/net/phy/icplus.c:273 ip101a_g_config_intr_pin()
warn: inconsistent returns '&phydev->mdio.bus->mdio_lock'.
Locked on : 242
Unlocked on: 273
It turns out that the comments in phy_select_page() say we have to call
phy_restore_page() even if the call to phy_select_page() fails.
Fixes: f9bc51e6cce2 ("net: phy: icplus: fix paged register access")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
drivers/net/phy/icplus.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/phy/icplus.c b/drivers/net/phy/icplus.c
index 4e15d4d02488..015b7b5aa776 100644
--- a/drivers/net/phy/icplus.c
+++ b/drivers/net/phy/icplus.c
@@ -239,7 +239,7 @@ static int ip101a_g_config_intr_pin(struct phy_device *phydev)
oldpage = phy_select_page(phydev, IP101G_DEFAULT_PAGE);
if (oldpage < 0)
- return oldpage;
+ goto out;
/* configure the RXER/INTR_32 pin of the 32-pin IP101GR if needed: */
switch (priv->sel_intr32) {
--
2.30.0
next reply other threads:[~2021-02-17 6:19 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-17 6:17 Dan Carpenter [this message]
2021-02-17 7:52 ` [PATCH net-next] net: phy: icplus: Call phy_restore_page() when phy_select_page() fails Michael Walle
2021-02-17 10:04 ` Russell King - ARM Linux admin
2021-02-17 10:12 ` Michael Walle
2021-02-17 10:21 ` Russell King - ARM Linux admin
2021-02-17 14:28 ` Dan Carpenter
2021-02-17 15:06 ` Russell King - ARM Linux admin
2021-02-17 15:33 ` Russell King - ARM Linux admin
2021-02-17 17:06 ` Andrew Lunn
2021-02-17 21:24 ` Dan Carpenter
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