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Message-Id: <20200331085438.836502509@linuxfoundation.org>
Date: Tue, 31 Mar 2020 10:59:20 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Chih-Wei Huang <cwhuang@...roid-x86.org>,
Heiner Kallweit <hkallweit1@...il.com>,
"David S. Miller" <davem@...emloft.net>
Subject: [PATCH 5.5 146/170] r8169: fix PHY driver check on platforms w/o module softdeps
From: Heiner Kallweit <hkallweit1@...il.com>
commit 2e8c339b4946490a922a21aa8cd869c6cfad2023 upstream.
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: f32593773549 ("r8169: check that Realtek PHY driver module is loaded")
Reported-by: Chih-Wei Huang <cwhuang@...roid-x86.org>
Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/net/ethernet/realtek/r8169_main.c | 16 +++++++---------
1 file changed, 7 insertions(+), 9 deletions(-)
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -6670,6 +6670,13 @@ static int r8169_mdio_register(struct rt
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() */
@@ -6831,15 +6838,6 @@ static int rtl_init_one(struct pci_dev *
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;
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