mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-27 17:18:59 +00:00
36 lines
1.3 KiB
Diff
36 lines
1.3 KiB
Diff
|
From 8e515a39805c013229698e1a142e16701f07edf9 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Alex Marginean <alexandru.marginean@nxp.com>
|
||
|
|
Date: Tue, 7 Jan 2020 16:50:31 +0200
|
||
|
|
Subject: [PATCH] drivers: net: phy: don't crash in phy_read/_write_mmd without
|
||
|
|
a PHY driver
|
||
|
|
|
||
|
|
The APIs can be used by Ethernet drivers to configure internal PHYs
|
||
|
|
without actually loading a PHY driver. Check that drv is not NULL before
|
||
|
|
reading from it.
|
||
|
|
|
||
|
|
Signed-off-by: Alex Marginean <alexandru.marginean@nxp.com>
|
||
|
|
---
|
||
|
|
drivers/net/phy/phy-core.c | 4 ++--
|
||
|
|
1 file changed, 2 insertions(+), 2 deletions(-)
|
||
|
|
|
||
|
|
--- a/drivers/net/phy/phy-core.c
|
||
|
|
+++ b/drivers/net/phy/phy-core.c
|
||
|
|
@@ -379,7 +379,7 @@ int __phy_read_mmd(struct phy_device *ph
|
||
|
|
if (regnum > (u16)~0 || devad > 32)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
- if (phydev->drv->read_mmd) {
|
||
|
|
+ if (phydev->drv && phydev->drv->read_mmd) {
|
||
|
|
val = phydev->drv->read_mmd(phydev, devad, regnum);
|
||
|
|
} else if (phydev->is_c45) {
|
||
|
|
u32 addr = MII_ADDR_C45 | (devad << 16) | (regnum & 0xffff);
|
||
|
|
@@ -436,7 +436,7 @@ int __phy_write_mmd(struct phy_device *p
|
||
|
|
if (regnum > (u16)~0 || devad > 32)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
- if (phydev->drv->write_mmd) {
|
||
|
|
+ if (phydev->drv && phydev->drv->write_mmd) {
|
||
|
|
ret = phydev->drv->write_mmd(phydev, devad, regnum, val);
|
||
|
|
} else if (phydev->is_c45) {
|
||
|
|
u32 addr = MII_ADDR_C45 | (devad << 16) | (regnum & 0xffff);
|