[PATCH 2/6] net: dsa: allow switch drivers to cleanup their resources

From: Neil Armstrong
Date: Tue Oct 27 2015 - 10:49:11 EST


Some switch drivers might request interrupts, remap register ranges,
allow such drivers to implement a "remove" callback doing just that.

Suggested-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
Signed-off-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
---
include/net/dsa.h | 1 +
net/dsa/dsa.c | 4 ++++
2 files changed, 5 insertions(+)

diff --git a/include/net/dsa.h b/include/net/dsa.h
index d4d13f7..725b11f 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -211,6 +211,7 @@ struct dsa_switch_driver {
*/
char *(*probe)(struct device *host_dev, int sw_addr);
int (*setup)(struct dsa_switch *ds);
+ void (*remove)(struct dsa_switch *ds);
int (*set_addr)(struct dsa_switch *ds, u8 *addr);
u32 (*get_phy_flags)(struct dsa_switch *ds, int port);

diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index aeb6a7c..7c9914b 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -459,6 +459,10 @@ static void dsa_switch_destroy(struct dsa_switch *ds)
}

mdiobus_unregister(ds->slave_mii_bus);
+
+ /* Leave a chance to the driver to cleanup */
+ if (ds->drv->remove)
+ ds->drv->remove(ds);
}

#ifdef CONFIG_PM_SLEEP
--
1.9.1
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