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| author | Heiner Kallweit <hkallweit1@gmail.com> | 2020-06-20 22:35:42 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-06-22 16:26:01 -0700 |
| commit | bd869245a3dcca1c8a77dfade7d3dc69a68365df (patch) | |
| tree | 01a196cd89ea629ca56643d907765318c0bf9586 /net/can | |
| parent | 8878adba6ab5414c36b693e09fe46c4416072cc7 (diff) | |
| download | linux-bd869245a3dcca1c8a77dfade7d3dc69a68365df.tar.bz2 | |
net: core: try to runtime-resume detached device in __dev_open
A netdevice may be marked as detached because the parent is
runtime-suspended and not accessible whilst interface or link is down.
An example are PCI network devices that go into PCI D3hot, see e.g.
__igc_shutdown() or rtl8169_net_suspend().
If netdevice is down and marked as detached we can only open it if
we runtime-resume it before __dev_open() calls netif_device_present().
Therefore, if netdevice is detached, try to runtime-resume the parent
and only return with an error if it's still detached.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/can')
0 files changed, 0 insertions, 0 deletions