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| author | Florian Fainelli <florian@openwrt.org> | 2013-01-21 10:58:51 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-01-21 21:40:12 +0100 |
| commit | f9bf5a2ca6cc331f32e3dd9cf16ced7215d0e6e8 (patch) | |
| tree | 774573c6a730967410a51e954577424be0977fe6 /net/dsa | |
| parent | dsa: use an unique and non conflicting bus name for the slave MII bus (diff) | |
| download | linux-f9bf5a2ca6cc331f32e3dd9cf16ced7215d0e6e8.tar.xz linux-f9bf5a2ca6cc331f32e3dd9cf16ced7215d0e6e8.zip | |
dsa: make dsa_switch_setup check for valid port names
This patch changes dsa_switch_setup() to ensure that at least one valid
valid port name is specified and will bail out with an error in case we
walked the maximum number of port with a valid port name found.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dsa')
| -rw-r--r-- | net/dsa/dsa.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c index 45295ca09571..2bc62ea857c8 100644 --- a/net/dsa/dsa.c +++ b/net/dsa/dsa.c @@ -80,6 +80,7 @@ dsa_switch_setup(struct dsa_switch_tree *dst, int index, int ret; char *name; int i; + bool valid_name_found = false; /* * Probe for switch model. @@ -131,8 +132,13 @@ dsa_switch_setup(struct dsa_switch_tree *dst, int index, } else { ds->phys_port_mask |= 1 << i; } + valid_name_found = true; } + if (!valid_name_found && i == DSA_MAX_PORTS) { + ret = -EINVAL; + goto out; + } /* * If the CPU connects to this switch, set the switch tree |