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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2025-05-22 14:21:47 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2025-06-19 16:28:19 +0300
commit4744a5d71d2abfcbfc0dfacbd2e7eef03d9db01c (patch)
tree717d7d87fd6195158dcbeded7e09083cdc099f31 /include/linux
parent363fdf2777423ad346d781f09548cca14877f729 (diff)
downloadlinux-4744a5d71d2abfcbfc0dfacbd2e7eef03d9db01c.tar.xz
net: phy: fix up const issues in to_mdio_device() and to_phy_device()
[ Upstream commit e9cb929670a1e98b592b30f03f06e9e20110f318 ] Both to_mdio_device() and to_phy_device() "throw away" the const pointer attribute passed to them and return a non-const pointer, which generally is not a good thing overall. Fix this up by using container_of_const() which was designed for this very problem. Cc: Alexander Lobakin <alobakin@pm.me> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Heiner Kallweit <hkallweit1@gmail.com> Cc: Russell King <linux@armlinux.org.uk> Fixes: 7eab14de73a8 ("mdio, phy: fix -Wshadow warnings triggered by nested container_of()") Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patch.msgid.link/2025052246-conduit-glory-8fc9@gregkh Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/mdio.h5
-rw-r--r--include/linux/phy.h5
2 files changed, 2 insertions, 8 deletions
diff --git a/include/linux/mdio.h b/include/linux/mdio.h
index 8fa23bdcedbf..0bca1a960853 100644
--- a/include/linux/mdio.h
+++ b/include/linux/mdio.h
@@ -44,10 +44,7 @@ struct mdio_device {
unsigned int reset_deassert_delay;
};
-static inline struct mdio_device *to_mdio_device(const struct device *dev)
-{
- return container_of(dev, struct mdio_device, dev);
-}
+#define to_mdio_device(__dev) container_of_const(__dev, struct mdio_device, dev)
/* struct mdio_driver_common: Common to all MDIO drivers */
struct mdio_driver_common {
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 5aa30ee99810..a57e799b1de1 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -766,10 +766,7 @@ struct phy_device {
/* Generic phy_device::dev_flags */
#define PHY_F_NO_IRQ 0x80000000
-static inline struct phy_device *to_phy_device(const struct device *dev)
-{
- return container_of(to_mdio_device(dev), struct phy_device, mdio);
-}
+#define to_phy_device(__dev) container_of_const(to_mdio_device(__dev), struct phy_device, mdio)
/**
* struct phy_tdr_config - Configuration of a TDR raw test