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| author | Florian Fainelli <f.fainelli@gmail.com> | 2017-03-05 12:34:49 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-08-11 09:30:09 -0700 |
| commit | aa3a735de9c9999da16b189424ca000a5bae5244 (patch) | |
| tree | f9111d0416ca7482379d3c8733cfbd49c4e2ab2f /include | |
| parent | bd6409bbe3d8a822c5d7ce794c2093a444a6890d (diff) | |
| download | linux-stable-aa3a735de9c9999da16b189424ca000a5bae5244.tar.gz linux-stable-aa3a735de9c9999da16b189424ca000a5bae5244.tar.bz2 linux-stable-aa3a735de9c9999da16b189424ca000a5bae5244.zip | |
net: phy: Do not perform software reset for Generic PHY
commit 0878fff1f42c18e448ab5b8b4f6a3eb32365b5b6 upstream.
The Generic PHY driver is a catch-all PHY driver and it should preserve
whatever prior initialization has been done by boot loader or firmware
agents. For specific PHY device configuration it is expected that a
specialized PHY driver would take over that role.
Resetting the generic PHY was a bad idea that has lead to several
complaints and downstream workarounds e.g: in OpenWrt/LEDE so restore
the behavior prior to 87aa9f9c61ad ("net: phy: consolidate PHY
reset in phy_init_hw()").
Reported-by: Felix Fietkau <nbd@nbd.name>
Fixes: 87aa9f9c61ad ("net: phy: consolidate PHY reset in phy_init_hw()")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/phy.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/phy.h b/include/linux/phy.h index d090cfcaa167..fbdacd1278e3 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -737,6 +737,10 @@ int genphy_read_status(struct phy_device *phydev); int genphy_suspend(struct phy_device *phydev); int genphy_resume(struct phy_device *phydev); int genphy_soft_reset(struct phy_device *phydev); +static inline int genphy_no_soft_reset(struct phy_device *phydev) +{ + return 0; +} void phy_driver_unregister(struct phy_driver *drv); void phy_drivers_unregister(struct phy_driver *drv, int n); int phy_driver_register(struct phy_driver *new_driver); |