Centralize the switch shutdown routine in a dedicated function,
ksz_switch_shutdown(), to enhance code maintainability and reduce
redundancy. This change abstracts the common shutdown operations
previously duplicated in ksz9477_i2c_shutdown() and ksz_spi_shutdown().
This refactoring is a preparatory step for an upcoming patch to avoid
reset on shutdown if Wake-on-LAN (WoL) is enabled.
Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
Reviewed-by: Florian Fainelli <florian.fainelli@xxxxxxxxxxxx>
Reviewed-by: Vladimir Oltean <vladimir.oltean@xxxxxxx>
---
drivers/net/dsa/microchip/ksz9477_i2c.c | 5 +----
drivers/net/dsa/microchip/ksz_common.c | 19 +++++++++++++++++++
drivers/net/dsa/microchip/ksz_common.h | 1 +
drivers/net/dsa/microchip/ksz_spi.c | 5 +----
4 files changed, 22 insertions(+), 8 deletions(-)
diff --git a/drivers/net/dsa/microchip/ksz9477_i2c.c b/drivers/net/dsa/microchip/ksz9477_i2c.c
index 2710afad4f3a..cac4a607e54a 100644
--- a/drivers/net/dsa/microchip/ksz9477_i2c.c
+++ b/drivers/net/dsa/microchip/ksz9477_i2c.c
@@ -66,10 +66,7 @@ static void ksz9477_i2c_shutdown(struct i2c_client *i2c)
if (!dev)
return;
- if (dev->dev_ops->reset)
- dev->dev_ops->reset(dev);
-
- dsa_switch_shutdown(dev->ds);
+ ksz_switch_shutdown(dev);
i2c_set_clientdata(i2c, NULL);
}
diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index 58ba1e6ff75f..7d0c7a32b8d7 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -3845,6 +3845,25 @@ struct ksz_device *ksz_switch_alloc(struct device *base, void *priv)
}
EXPORT_SYMBOL(ksz_switch_alloc);
+/**
+ * ksz_switch_shutdown - Shutdown routine for the switch device.
+ * @dev: The switch device structure.
+ *
+ * This function is responsible for initiating a shutdown sequence for the
+ * switch device. It invokes the reset operation defined in the device
+ * operations, if available, to reset the switch. Subsequently, it calls the
+ * DSA framework's shutdown function to ensure a proper shutdown of the DSA
+ * switch.
+ */
+void ksz_switch_shutdown(struct ksz_device *dev)
+{
+ if (dev->dev_ops->reset)
+ dev->dev_ops->reset(dev);
+
+ dsa_switch_shutdown(dev->ds);
+}
+EXPORT_SYMBOL(ksz_switch_shutdown);
+
static void ksz_parse_rgmii_delay(struct ksz_device *dev, int port_num,
struct device_node *port_dn)
{
diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h
index 06996813f9a8..14b4828f80a1 100644
--- a/drivers/net/dsa/microchip/ksz_common.h
+++ b/drivers/net/dsa/microchip/ksz_common.h
@@ -400,6 +400,7 @@ extern const struct ksz_chip_data ksz_switch_chips[];
int ksz_switch_macaddr_get(struct dsa_switch *ds, int port,
struct netlink_ext_ack *extack);
void ksz_switch_macaddr_put(struct dsa_switch *ds);
+void ksz_switch_shutdown(struct ksz_device *dev);
/* Common register access functions */
static inline struct regmap *ksz_regmap_8(struct ksz_device *dev)
diff --git a/drivers/net/dsa/microchip/ksz_spi.c b/drivers/net/dsa/microchip/ksz_spi.c
index 279338451621..6f6d878e742c 100644
--- a/drivers/net/dsa/microchip/ksz_spi.c
+++ b/drivers/net/dsa/microchip/ksz_spi.c
@@ -114,10 +114,7 @@ static void ksz_spi_shutdown(struct spi_device *spi)
if (!dev)
return;
- if (dev->dev_ops->reset)
- dev->dev_ops->reset(dev);
-
- dsa_switch_shutdown(dev->ds);
+ ksz_switch_shutdown(dev);
spi_set_drvdata(spi, NULL);
}
--
2.39.2
