diff options
author | Russell King <rmk+kernel@armlinux.org.uk> | 2020-05-26 13:10:02 +0100 |
---|---|---|
committer | Russell King <rmk+kernel@armlinux.org.uk> | 2020-06-03 18:08:12 +0100 |
commit | 892f14fe7ae76d24669ebdf222169c989fb0049c (patch) | |
tree | 47daa2ca97af75d1536eccd7da358df1df79b871 /drivers | |
parent | 1e2479973d2932d19310a71db98fd897c996378e (diff) |
net: phy: set devices_in_package only after validation
Only set the devices_in_package to a non-zero value if we find a valid
value for this field, so we avoid leaving it set to e.g. 0x1fffffff.
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/net/phy/phy_device.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index 26cf5cd2d137..7870589a59c9 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -732,13 +732,13 @@ static int get_phy_c45_ids(struct mii_bus *bus, int addr, struct phy_c45_device_ids *c45_ids) { const int num_ids = ARRAY_SIZE(c45_ids->device_ids); - u32 *devs = &c45_ids->devices_in_package; + u32 devs_in_pkg = 0; int i, ret, phy_reg; /* Find first non-zero Devices In package. Device zero is reserved * for 802.3 c45 complied PHYs, so don't probe it at first. */ - for (i = 1; i < MDIO_MMD_NUM && *devs == 0; i++) { + for (i = 1; i < MDIO_MMD_NUM && devs_in_pkg == 0; i++) { if (i == MDIO_MMD_VEND1 || i == MDIO_MMD_VEND2) { /* Check that there is a device present at this * address before reading the devices-in-package @@ -753,28 +753,28 @@ static int get_phy_c45_ids(struct mii_bus *bus, int addr, if (!ret) continue; } - phy_reg = get_phy_c45_devs_in_pkg(bus, addr, i, devs); + phy_reg = get_phy_c45_devs_in_pkg(bus, addr, i, &devs_in_pkg); if (phy_reg < 0) return -EIO; } - if ((*devs & 0x1fffffff) == 0x1fffffff) { + if ((devs_in_pkg & 0x1fffffff) == 0x1fffffff) { /* If mostly Fs, there is no device there, then let's probe * MMD 0, as some 10G PHYs have zero Devices In package, * e.g. Cortina CS4315/CS4340 PHY. */ - phy_reg = get_phy_c45_devs_in_pkg(bus, addr, 0, devs); + phy_reg = get_phy_c45_devs_in_pkg(bus, addr, 0, &devs_in_pkg); if (phy_reg < 0) return -EIO; /* no device there, let's get out of here */ - if ((*devs & 0x1fffffff) == 0x1fffffff) + if ((devs_in_pkg & 0x1fffffff) == 0x1fffffff) return -ENODEV; } /* Now probe Device Identifiers for each device present. */ for (i = 1; i < num_ids; i++) { - if (!(c45_ids->devices_in_package & (1 << i))) + if (!(devs_in_pkg & (1 << i))) continue; phy_reg = mdiobus_c45_read(bus, addr, i, MII_PHYSID1); @@ -788,6 +788,8 @@ static int get_phy_c45_ids(struct mii_bus *bus, int addr, c45_ids->device_ids[i] |= phy_reg; } + c45_ids->devices_in_package = devs_in_pkg; + return 0; } |