| Message ID | 1394484661-4554-2-git-send-email-sebastian.hesselbarth@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index 19c9eca0ef26..dae1fa8aa23d 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -1092,7 +1092,9 @@ EXPORT_SYMBOL(phy_ethtool_set_wol); void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) { - if (phydev->drv->get_wol) + memset(wol, 0, sizeof(*wol)); + + if (phydev && phydev->drv->get_wol) phydev->drv->get_wol(phydev, wol); } EXPORT_SYMBOL(phy_ethtool_get_wol);
phy_ethtool_get_wol is a helper to get current WOL settings from a phy device. When using this helper on a PHY without .get_wol callback, struct ethtool_wolinfo is never set-up correctly and may contain misleading information about WOL status. To fix this, always zero struct ethtool_wolinfo regardless of .get_wol callback availability. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> --- Changelog: v1->v2: - clear whole struct ethtool_wolinfo - check for non-NULL phy_device Cc: David Miller <davem@davemloft.net> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: netdev@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/net/phy/phy.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)