Merge branch 'dsa-unbind'
Neil Armstrong says: ==================== net: dsa: complete and fix the dsa unbinding In order to cleanly unbind the dsa core, either as a module removal, or a platform device unbind, switch the allocation the their devm_ counterparts and complete the destroy functions. First, the missing kfree were added, the remove function were completed then kfree were removed in favor to devm_ calls. The last patch is an way to cleanly exit the probe when no switch is found in the discover process. The patches are based on the current net. v3: - make checkpatch happy with 1/5 & 5/5 - fix 5/5 exit path with a goto ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
commit
60872867d8
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@ -22,6 +22,7 @@
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#include <linux/of_platform.h>
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#include <linux/of_net.h>
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#include <linux/sysfs.h>
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#include <linux/phy_fixed.h>
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#include "dsa_priv.h"
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char dsa_driver_version[] = "0.1";
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@ -305,7 +306,7 @@ static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent)
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if (ret < 0)
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goto out;
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ds->slave_mii_bus = mdiobus_alloc();
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ds->slave_mii_bus = devm_mdiobus_alloc(parent);
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if (ds->slave_mii_bus == NULL) {
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ret = -ENOMEM;
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goto out;
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@ -314,7 +315,7 @@ static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent)
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ret = mdiobus_register(ds->slave_mii_bus);
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if (ret < 0)
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goto out_free;
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goto out;
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/*
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@ -367,10 +368,7 @@ static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent)
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return ret;
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out_free:
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mdiobus_free(ds->slave_mii_bus);
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out:
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kfree(ds);
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return ret;
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}
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@ -400,7 +398,7 @@ dsa_switch_setup(struct dsa_switch_tree *dst, int index,
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/*
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* Allocate and initialise switch state.
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*/
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ds = kzalloc(sizeof(*ds) + drv->priv_size, GFP_KERNEL);
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ds = devm_kzalloc(parent, sizeof(*ds) + drv->priv_size, GFP_KERNEL);
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if (ds == NULL)
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return ERR_PTR(-ENOMEM);
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@ -420,10 +418,47 @@ dsa_switch_setup(struct dsa_switch_tree *dst, int index,
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static void dsa_switch_destroy(struct dsa_switch *ds)
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{
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struct device_node *port_dn;
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struct phy_device *phydev;
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struct dsa_chip_data *cd = ds->pd;
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int port;
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#ifdef CONFIG_NET_DSA_HWMON
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if (ds->hwmon_dev)
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hwmon_device_unregister(ds->hwmon_dev);
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#endif
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/* Disable configuration of the CPU and DSA ports */
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for (port = 0; port < DSA_MAX_PORTS; port++) {
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if (!(dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port)))
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continue;
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port_dn = cd->port_dn[port];
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if (of_phy_is_fixed_link(port_dn)) {
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phydev = of_phy_find_device(port_dn);
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if (phydev) {
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int addr = phydev->addr;
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phy_device_free(phydev);
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of_node_put(port_dn);
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fixed_phy_del(addr);
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}
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}
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}
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/* Destroy network devices for physical switch ports. */
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for (port = 0; port < DSA_MAX_PORTS; port++) {
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if (!(ds->phys_port_mask & (1 << port)))
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continue;
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if (!ds->ports[port])
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continue;
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unregister_netdev(ds->ports[port]);
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free_netdev(ds->ports[port]);
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}
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mdiobus_unregister(ds->slave_mii_bus);
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}
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#ifdef CONFIG_PM_SLEEP
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@ -802,10 +837,11 @@ static inline void dsa_of_remove(struct device *dev)
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}
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#endif
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static void dsa_setup_dst(struct dsa_switch_tree *dst, struct net_device *dev,
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struct device *parent, struct dsa_platform_data *pd)
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static int dsa_setup_dst(struct dsa_switch_tree *dst, struct net_device *dev,
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struct device *parent, struct dsa_platform_data *pd)
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{
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int i;
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unsigned configured = 0;
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dst->pd = pd;
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dst->master_netdev = dev;
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@ -825,8 +861,16 @@ static void dsa_setup_dst(struct dsa_switch_tree *dst, struct net_device *dev,
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dst->ds[i] = ds;
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if (ds->drv->poll_link != NULL)
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dst->link_poll_needed = 1;
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++configured;
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}
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/*
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* If no switch was found, exit cleanly
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*/
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if (!configured)
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return -EPROBE_DEFER;
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/*
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* If we use a tagging format that doesn't have an ethertype
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* field, make sure that all packets from this point on get
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@ -843,6 +887,8 @@ static void dsa_setup_dst(struct dsa_switch_tree *dst, struct net_device *dev,
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dst->link_poll_timer.expires = round_jiffies(jiffies + HZ);
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add_timer(&dst->link_poll_timer);
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}
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return 0;
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}
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static int dsa_probe(struct platform_device *pdev)
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@ -883,7 +929,7 @@ static int dsa_probe(struct platform_device *pdev)
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goto out;
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}
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dst = kzalloc(sizeof(*dst), GFP_KERNEL);
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dst = devm_kzalloc(&pdev->dev, sizeof(*dst), GFP_KERNEL);
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if (dst == NULL) {
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dev_put(dev);
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ret = -ENOMEM;
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@ -892,7 +938,9 @@ static int dsa_probe(struct platform_device *pdev)
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platform_set_drvdata(pdev, dst);
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dsa_setup_dst(dst, dev, &pdev->dev, pd);
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ret = dsa_setup_dst(dst, dev, &pdev->dev, pd);
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if (ret)
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goto out;
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return 0;
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@ -914,7 +962,7 @@ static void dsa_remove_dst(struct dsa_switch_tree *dst)
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for (i = 0; i < dst->pd->nr_chips; i++) {
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struct dsa_switch *ds = dst->ds[i];
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if (ds != NULL)
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if (ds)
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dsa_switch_destroy(ds);
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}
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}
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