phylib: fix PAL state machine restart on resume

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On resume, before starting the PAL state machine, check if the
adjust_link() method is well supplied. If not, this would lead to a
NULL pointer dereference in the phy_state_machine() function.

This scenario can happen if the Ethernet driver call manually the PHY
functions instead of using the PAL state machine. The mv643xx_eth driver
is a such example.

Signed-off-by: Simon Guinot <sguinot@lacie.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Simon Guinot 2010-09-13 22:12:01 +00:00 • committed by David S. Miller

parent ef885afbf8

commit fddd91016d

1 changed files with 2 additions and 2 deletions

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4

drivers/net/phy/mdio_bus.c

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