net: phylink: don't call netif_carrier_off() with NULL netdev

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Dan Carpenter points out that we have a code path that permits a NULL
netdev pointer to be passed to netif_carrier_off(), which will cause
a kernel oops. In any case, we need to set pl->old_link_state to false
to have the desired effect when there is no netdev present.

Fixes: f97493657c ("net: phylink: add suspend/resume support")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Russell King (Oracle) 2021-09-17 14:36:31 +01:00 • committed by David S. Miller

parent 4fc2998983

commit cbcca2e396

1 changed files with 4 additions and 1 deletions

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drivers/net/phy/phylink.c

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