cfg80211: check wiphy driver existence for drvinfo report
authorSergey Matyukevich <sergey.matyukevich.os@quantenna.com>
Mon, 3 Feb 2020 10:56:50 +0000 (10:56 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 5 Mar 2020 15:42:13 +0000 (16:42 +0100)
commita8531cf81da41967ec338cd308468d97f6bbe3dc
treeffb1f538f5dba7bed9ab75c90e4718d153f355d8
parent3d7a9c311e991714835ac023572e2bb431c47a6e
cfg80211: check wiphy driver existence for drvinfo report

[ Upstream commit bfb7bac3a8f47100ebe7961bd14e924c96e21ca7 ]

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: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
Link: https://lore.kernel.org/r/20200203105644.28875-1-sergey.matyukevich.os@quantenna.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
net/wireless/ethtool.c