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r8169: fix PHY driver check on platforms w/o module softdeps 

On Android/x86 the module loading infrastructure can't deal with
softdeps. Therefore the check for presence of the Realtek PHY driver
module fails. mdiobus_register() will try to load the PHY driver
module, therefore move the check to after this call and explicitly
check that a dedicated PHY driver is bound to the PHY device.

Fixes: f325937735 ("r8169: check that Realtek PHY driver module is loaded")
Reported-by: Chih-Wei Huang <cwhuang@android-x86.org>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
alistair/sensors
Heiner Kallweit 2020-03-27 17:33:32 +01:00 committed by David S. Miller
parent e00dd941ff
commit 2e8c339b49
1 changed files with 7 additions and 9 deletions
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16
drivers/net/ethernet/realtek/r8169_main.c
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@ -5285,6 +5285,13 @@ static int r8169_mdio_register(struct rtl8169_private *tp)
if (!tp->phydev) {
mdiobus_unregister(new_bus);
return -ENODEV;
} else if (!tp->phydev->drv) {
/* Most chip versions fail with the genphy driver.
* Therefore ensure that the dedicated PHY driver is loaded.
*/
dev_err(&pdev->dev, "realtek.ko not loaded, maybe it needs to be added to initramfs?\n");
mdiobus_unregister(new_bus);
return -EUNATCH;
}
/* PHY will be woken up in rtl_open() */
@ -5446,15 +5453,6 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
int chipset, region;
int jumbo_max, rc;
/* Some tools for creating an initramfs don't consider softdeps, then
* r8169.ko may be in initramfs, but realtek.ko not. Then the generic
* PHY driver is used that doesn't work with most chip versions.
*/
if (!driver_find("RTL8201CP Ethernet", &mdio_bus_type)) {
dev_err(&pdev->dev, "realtek.ko not loaded, maybe it needs to be added to initramfs?\n");
return -ENOENT;
}
dev = devm_alloc_etherdev(&pdev->dev, sizeof (*tp));
if (!dev)
return -ENOMEM;