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The driver connects and disconnects the PHY device whenever the net device is brought up and down. The ethtool get_settings, set_settings and nway_reset operations will dereference a null or dangling pointer if called while it is down. I think it would be preferable to keep the PHY connected, but there may be good reasons not to. As an immediate fix for this bug: - Set the phydev pointer to NULL after disconnecting the PHY - Change those three operations to return -ENODEV while the PHY is not connected Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Kconfig | ||
Makefile | ||
sh_eth.c | ||
sh_eth.h |