Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-01 08:31:37 +00:00
Code Issues Packages Projects Releases Wiki Activity

net: dsa: bcm_sf2: Do not assume DSA master supports WoL

Browse Source 
We assume in the bcm_sf2 driver that the DSA master network device
supports ethtool_ops::{get,set}_wol operations, which is not a given.
Avoid de-referencing potentially non-existent function pointers and
check them as we should.

Fixes: 96e65d7f3f ("net: dsa: bcm_sf2: add support for Wake-on-LAN")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2019-02-15 12:16:52 -08:00 committed by David S. Miller
parent a40061ea2e
commit c3152ec4c0
1 changed files with 6 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/dsa/bcm_sf2.c
View File

@ -726,9 +726,10 @@ static void bcm_sf2_sw_get_wol(struct dsa_switch *ds, int port,
{
struct net_device *p = ds->ports[port].cpu_dp->master;
struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
struct ethtool_wolinfo pwol;
struct ethtool_wolinfo pwol = { };
/* Get the parent device WoL settings */
if (p->ethtool_ops->get_wol)
p->ethtool_ops->get_wol(p, &pwol);
/* Advertise the parent device supported settings */
@ -750,8 +751,9 @@ static int bcm_sf2_sw_set_wol(struct dsa_switch *ds, int port,
struct net_device *p = ds->ports[port].cpu_dp->master;
struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
s8 cpu_port = ds->ports[port].cpu_dp->index;
struct ethtool_wolinfo pwol;
struct ethtool_wolinfo pwol = { };
if (p->ethtool_ops->get_wol)
p->ethtool_ops->get_wol(p, &pwol);
if (wol->wolopts & ~pwol.supported)
return -EINVAL;