Commit c8cf89f7 authored by Florian Fainelli's avatar Florian Fainelli Committed by David S. Miller

net: dsa: Fix off-by-one in switch address parsing

cd->sw_addr is used as a MDIO bus address, which cannot exceed
PHY_MAX_ADDR (32), our check was off-by-one.

Fixes: 5e95329b ("dsa: add device tree bindings to register DSA switches")
Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8f5063e9
...@@ -630,7 +630,7 @@ static int dsa_of_probe(struct device *dev) ...@@ -630,7 +630,7 @@ static int dsa_of_probe(struct device *dev)
continue; continue;
cd->sw_addr = be32_to_cpup(sw_addr); cd->sw_addr = be32_to_cpup(sw_addr);
if (cd->sw_addr > PHY_MAX_ADDR) if (cd->sw_addr >= PHY_MAX_ADDR)
continue; continue;
if (!of_property_read_u32(child, "eeprom-length", &eeprom_len)) if (!of_property_read_u32(child, "eeprom-length", &eeprom_len))
......
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