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authorMichael Karcher <kernel@mkarcher.dialup.fu-berlin.de>2018-04-19 05:05:20 +0300
committerDavid S. Miller <davem@davemloft.net>2018-04-19 23:11:10 +0300
commitfd5f375c162807b4e39676c540e26400c091cf4f (patch)
treeb78d9244ede7e143eb8b82ab56a6d89cb678c78c /drivers/net/ethernet/8390
parent7a0907bd399f6f2d40906c6d38ed1814d314ef74 (diff)
downloadlinux-fd5f375c162807b4e39676c540e26400c091cf4f.tar.xz
net-next: ax88796: Attach MII bus only when open
Call ax_mii_init in ax_open(), and unregister/remove mdiobus resources in ax_close(). This is needed to be able to unload the module, as the module is busy while the MII bus is attached. Signed-off-by: Michael Karcher <kernel@mkarcher.dialup.fu-berlin.de> Signed-off-by: Michael Schmitz <schmitzmic@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/8390')
-rw-r--r--drivers/net/ethernet/8390/ax88796.c183
1 files changed, 95 insertions, 88 deletions
diff --git a/drivers/net/ethernet/8390/ax88796.c b/drivers/net/ethernet/8390/ax88796.c
index ae3937535838..ab020e601ec9 100644
--- a/drivers/net/ethernet/8390/ax88796.c
+++ b/drivers/net/ethernet/8390/ax88796.c
@@ -387,6 +387,90 @@ static void ax_phy_switch(struct net_device *dev, int on)
ei_outb(reg_gpoc, ei_local->mem + EI_SHIFT(0x17));
}
+static void ax_bb_mdc(struct mdiobb_ctrl *ctrl, int level)
+{
+ struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl);
+
+ if (level)
+ ax->reg_memr |= AX_MEMR_MDC;
+ else
+ ax->reg_memr &= ~AX_MEMR_MDC;
+
+ ei_outb(ax->reg_memr, ax->addr_memr);
+}
+
+static void ax_bb_dir(struct mdiobb_ctrl *ctrl, int output)
+{
+ struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl);
+
+ if (output)
+ ax->reg_memr &= ~AX_MEMR_MDIR;
+ else
+ ax->reg_memr |= AX_MEMR_MDIR;
+
+ ei_outb(ax->reg_memr, ax->addr_memr);
+}
+
+static void ax_bb_set_data(struct mdiobb_ctrl *ctrl, int value)
+{
+ struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl);
+
+ if (value)
+ ax->reg_memr |= AX_MEMR_MDO;
+ else
+ ax->reg_memr &= ~AX_MEMR_MDO;
+
+ ei_outb(ax->reg_memr, ax->addr_memr);
+}
+
+static int ax_bb_get_data(struct mdiobb_ctrl *ctrl)
+{
+ struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl);
+ int reg_memr = ei_inb(ax->addr_memr);
+
+ return reg_memr & AX_MEMR_MDI ? 1 : 0;
+}
+
+static const struct mdiobb_ops bb_ops = {
+ .owner = THIS_MODULE,
+ .set_mdc = ax_bb_mdc,
+ .set_mdio_dir = ax_bb_dir,
+ .set_mdio_data = ax_bb_set_data,
+ .get_mdio_data = ax_bb_get_data,
+};
+
+static int ax_mii_init(struct net_device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev->dev.parent);
+ struct ei_device *ei_local = netdev_priv(dev);
+ struct ax_device *ax = to_ax_dev(dev);
+ int err;
+
+ ax->bb_ctrl.ops = &bb_ops;
+ ax->addr_memr = ei_local->mem + AX_MEMR;
+ ax->mii_bus = alloc_mdio_bitbang(&ax->bb_ctrl);
+ if (!ax->mii_bus) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ ax->mii_bus->name = "ax88796_mii_bus";
+ ax->mii_bus->parent = dev->dev.parent;
+ snprintf(ax->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x",
+ pdev->name, pdev->id);
+
+ err = mdiobus_register(ax->mii_bus);
+ if (err)
+ goto out_free_mdio_bitbang;
+
+ return 0;
+
+ out_free_mdio_bitbang:
+ free_mdio_bitbang(ax->mii_bus);
+ out:
+ return err;
+}
+
static int ax_open(struct net_device *dev)
{
struct ax_device *ax = to_ax_dev(dev);
@@ -394,6 +478,10 @@ static int ax_open(struct net_device *dev)
netdev_dbg(dev, "open\n");
+ ret = ax_mii_init(dev);
+ if (ret)
+ goto failed_mii;
+
ret = request_irq(dev->irq, ax_ei_interrupt, ax->irqflags,
dev->name, dev);
if (ret)
@@ -421,6 +509,10 @@ static int ax_open(struct net_device *dev)
ax_phy_switch(dev, 0);
free_irq(dev->irq, dev);
failed_request_irq:
+ /* unregister mdiobus */
+ mdiobus_unregister(ax->mii_bus);
+ free_mdio_bitbang(ax->mii_bus);
+ failed_mii:
return ret;
}
@@ -440,6 +532,9 @@ static int ax_close(struct net_device *dev)
phy_disconnect(dev->phydev);
free_irq(dev->irq, dev);
+
+ mdiobus_unregister(ax->mii_bus);
+ free_mdio_bitbang(ax->mii_bus);
return 0;
}
@@ -539,92 +634,8 @@ static const struct net_device_ops ax_netdev_ops = {
#endif
};
-static void ax_bb_mdc(struct mdiobb_ctrl *ctrl, int level)
-{
- struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl);
-
- if (level)
- ax->reg_memr |= AX_MEMR_MDC;
- else
- ax->reg_memr &= ~AX_MEMR_MDC;
-
- ei_outb(ax->reg_memr, ax->addr_memr);
-}
-
-static void ax_bb_dir(struct mdiobb_ctrl *ctrl, int output)
-{
- struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl);
-
- if (output)
- ax->reg_memr &= ~AX_MEMR_MDIR;
- else
- ax->reg_memr |= AX_MEMR_MDIR;
-
- ei_outb(ax->reg_memr, ax->addr_memr);
-}
-
-static void ax_bb_set_data(struct mdiobb_ctrl *ctrl, int value)
-{
- struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl);
-
- if (value)
- ax->reg_memr |= AX_MEMR_MDO;
- else
- ax->reg_memr &= ~AX_MEMR_MDO;
-
- ei_outb(ax->reg_memr, ax->addr_memr);
-}
-
-static int ax_bb_get_data(struct mdiobb_ctrl *ctrl)
-{
- struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl);
- int reg_memr = ei_inb(ax->addr_memr);
-
- return reg_memr & AX_MEMR_MDI ? 1 : 0;
-}
-
-static const struct mdiobb_ops bb_ops = {
- .owner = THIS_MODULE,
- .set_mdc = ax_bb_mdc,
- .set_mdio_dir = ax_bb_dir,
- .set_mdio_data = ax_bb_set_data,
- .get_mdio_data = ax_bb_get_data,
-};
-
/* setup code */
-static int ax_mii_init(struct net_device *dev)
-{
- struct platform_device *pdev = to_platform_device(dev->dev.parent);
- struct ei_device *ei_local = netdev_priv(dev);
- struct ax_device *ax = to_ax_dev(dev);
- int err;
-
- ax->bb_ctrl.ops = &bb_ops;
- ax->addr_memr = ei_local->mem + AX_MEMR;
- ax->mii_bus = alloc_mdio_bitbang(&ax->bb_ctrl);
- if (!ax->mii_bus) {
- err = -ENOMEM;
- goto out;
- }
-
- ax->mii_bus->name = "ax88796_mii_bus";
- ax->mii_bus->parent = dev->dev.parent;
- snprintf(ax->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x",
- pdev->name, pdev->id);
-
- err = mdiobus_register(ax->mii_bus);
- if (err)
- goto out_free_mdio_bitbang;
-
- return 0;
-
- out_free_mdio_bitbang:
- free_mdio_bitbang(ax->mii_bus);
- out:
- return err;
-}
-
static void ax_initial_setup(struct net_device *dev, struct ei_device *ei_local)
{
void __iomem *ioaddr = ei_local->mem;
@@ -755,10 +766,6 @@ static int ax_init_dev(struct net_device *dev)
dev->netdev_ops = &ax_netdev_ops;
dev->ethtool_ops = &ax_ethtool_ops;
- ret = ax_mii_init(dev);
- if (ret)
- goto err_out;
-
ax_NS8390_init(dev, 0);
ret = register_netdev(dev);