Commit bfb7bac3 authored by Sergey Matyukevich's avatar Sergey Matyukevich Committed by Johannes Berg

cfg80211: check wiphy driver existence for drvinfo report

When preparing ethtool drvinfo, check if wiphy driver is defined
before dereferencing it. Driver may not exist, e.g. if wiphy is
attached to a virtual platform device.
Signed-off-by: default avatarSergey Matyukevich <sergey.matyukevich.os@quantenna.com>
Link: https://lore.kernel.org/r/20200203105644.28875-1-sergey.matyukevich.os@quantenna.comSigned-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent a04564c9
......@@ -7,9 +7,13 @@
void cfg80211_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct device *pdev = wiphy_dev(wdev->wiphy);
strlcpy(info->driver, wiphy_dev(wdev->wiphy)->driver->name,
sizeof(info->driver));
if (pdev->driver)
strlcpy(info->driver, pdev->driver->name,
sizeof(info->driver));
else
strlcpy(info->driver, "N/A", sizeof(info->driver));
strlcpy(info->version, init_utsname()->release, sizeof(info->version));
......
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