r8169: fix setting driver_data after register_netdev
authorHeiner Kallweit <hkallweit1@gmail.com>
Mon, 26 Mar 2018 17:19:30 +0000 (19:19 +0200)
committerDavid S. Miller <davem@davemloft.net>
Tue, 27 Mar 2018 14:56:04 +0000 (10:56 -0400)
commit19c9ea363a244f85f90a424f9936e6d56449e33c
tree2177ec75f91dd0fe75bf87dbbb20bf50babf5e99
parent1dfe82ebd7d8fd43dba9948fdfb31f145014baa0
r8169: fix setting driver_data after register_netdev

pci_set_drvdata() is called only after registering the net_device,
therefore we could run into a NPE if one of the functions using
driver_data is called before it's set.

Fix this by calling pci_set_drvdata() before registering the
net_device.

This fix is a candidate for stable. As far as I can see the
bug has been there in kernel version 3.2 already, therefore
I can't provide a reference which commit is fixed by it.

The fix may need small adjustments per kernel version because
due to other changes the label which is jumped to if
register_netdev() fails has changed over time.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/realtek/r8169.c