net: phylink: avoid oops during initialisation

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If we intend to use PCS operations, mac_pcs_get_state() will not be
implemented, so will be NULL. If we also intend to register the PCS
operations in mac_prepare() or mac_config(), then this leads to an
attempt to call NULL function pointer during phylink_start(). Avoid
this, but we must report the link is down.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Russell King 2020-08-28 11:53:53 +01:00 • committed by David S. Miller

parent 3b44c79360

commit e859a60add

1 changed files with 3 additions and 1 deletions

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drivers/net/phy/phylink.c

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