6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Aleksandr Mishin <amishin@xxxxxxxxxx>
[ Upstream commit efeddd552ec6767e4c8884caa516ac80b65f8823 ]
In mac_probe() there are calls to of_find_device_by_node() which takes
references to of_dev->dev. These references are not saved and not released
later on error path in mac_probe() and in mac_remove().
Add new fields into mac_device structure to save references taken for
future use in mac_probe() and mac_remove().
This is a preparation for further reference leaks fix.
Signed-off-by: Aleksandr Mishin <amishin@xxxxxxxxxx>
Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Stable-dep-of: 1dec67e0d9fb ("fsl/fman: Fix refcount handling of fman-related devices")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/ethernet/freescale/fman/mac.c | 6 ++++--
drivers/net/ethernet/freescale/fman/mac.h | 6 +++++-
2 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/freescale/fman/mac.c b/drivers/net/ethernet/freescale/fman/mac.c
index 9767586b4eb32..9b863db0bf087 100644
--- a/drivers/net/ethernet/freescale/fman/mac.c
+++ b/drivers/net/ethernet/freescale/fman/mac.c
@@ -197,6 +197,7 @@ static int mac_probe(struct platform_device *_of_dev)
err = -EINVAL;
goto _return_of_node_put;
}
+ mac_dev->fman_dev = &of_dev->dev;
/* Get the FMan cell-index */
err = of_property_read_u32(dev_node, "cell-index", &val);
@@ -208,7 +209,7 @@ static int mac_probe(struct platform_device *_of_dev)
/* cell-index 0 => FMan id 1 */
fman_id = (u8)(val + 1);
- priv->fman = fman_bind(&of_dev->dev);
+ priv->fman = fman_bind(mac_dev->fman_dev);
if (!priv->fman) {
dev_err(dev, "fman_bind(%pOF) failed\n", dev_node);
err = -ENODEV;
@@ -284,8 +285,9 @@ static int mac_probe(struct platform_device *_of_dev)
err = -EINVAL;
goto _return_of_node_put;
}
+ mac_dev->fman_port_devs[i] = &of_dev->dev;
- mac_dev->port[i] = fman_port_bind(&of_dev->dev);
+ mac_dev->port[i] = fman_port_bind(mac_dev->fman_port_devs[i]);
if (!mac_dev->port[i]) {
dev_err(dev, "dev_get_drvdata(%pOF) failed\n",
dev_node);
diff --git a/drivers/net/ethernet/freescale/fman/mac.h b/drivers/net/ethernet/freescale/fman/mac.h
index fe747915cc737..8b5b43d50f8ef 100644
--- a/drivers/net/ethernet/freescale/fman/mac.h
+++ b/drivers/net/ethernet/freescale/fman/mac.h
@@ -19,12 +19,13 @@
struct fman_mac;
struct mac_priv_s;
+#define PORT_NUM 2
struct mac_device {
void __iomem *vaddr;
struct device *dev;
struct resource *res;
u8 addr[ETH_ALEN];
- struct fman_port *port[2];
+ struct fman_port *port[PORT_NUM];
struct phylink *phylink;
struct phylink_config phylink_config;
phy_interface_t phy_if;
@@ -52,6 +53,9 @@ struct mac_device {
struct fman_mac *fman_mac;
struct mac_priv_s *priv;
+
+ struct device *fman_dev;
+ struct device *fman_port_devs[PORT_NUM];
};
static inline struct mac_device
--
2.43.0
