summaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
authorHeiner Kallweit <hkallweit1@gmail.com>2018-11-23 19:41:29 +0100
committerDavid S. Miller <davem@davemloft.net>2018-11-27 15:00:24 -0800
commitc85ddecae6e5e82ca3ae6f20c63f1d865e2ff5ea (patch)
treec30780a2c28e7ab09d6d72fa5865d21553ffb8a9 /drivers
parent45611c61dd503454b2edae00aabe1e429ec49ebe (diff)
downloadlinux-c85ddecae6e5e82ca3ae6f20c63f1d865e2ff5ea.tar.bz2
net: phy: add workaround for issue where PHY driver doesn't bind to the device
After switching the r8169 driver to use phylib some user reported that their network is broken. This was caused by the genphy PHY driver being used instead of the dedicated PHY driver for the RTL8211B. Users reported that loading the Realtek PHY driver module upfront fixes the issue. See also this mail thread: https://marc.info/?t=154279781800003&r=1&w=2 The issue is quite weird and the root cause seems to be somewhere in the base driver core. The patch works around the issue and may be removed once the actual issue is fixed. The Fixes tag refers to the first reported occurrence of the issue. The issue itself may have been existing much longer and it may affect users of other network chips as well. Users typically will recognize this issue only if their PHY stops working when being used with the genphy driver. Fixes: f1e911d5d0df ("r8169: add basic phylib support") Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/phy/phy_device.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index ab33d1777132..23ee3967c166 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -2197,6 +2197,14 @@ int phy_driver_register(struct phy_driver *new_driver, struct module *owner)
new_driver->mdiodrv.driver.remove = phy_remove;
new_driver->mdiodrv.driver.owner = owner;
+ /* The following works around an issue where the PHY driver doesn't bind
+ * to the device, resulting in the genphy driver being used instead of
+ * the dedicated driver. The root cause of the issue isn't known yet
+ * and seems to be in the base driver core. Once this is fixed we may
+ * remove this workaround.
+ */
+ new_driver->mdiodrv.driver.probe_type = PROBE_FORCE_SYNCHRONOUS;
+
retval = driver_register(&new_driver->mdiodrv.driver);
if (retval) {
pr_err("%s: Error %d in registering driver\n",