net: sfp: avoid power switch on address-change modules

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If the module indicates that it requires an address change sequence to
switch between address 0x50 and 0x51, which we don't support, we can't
write to the register that controls the power mode to switch to high
power mode.  Warn the user that the module may not be functional in
this case, and don't try to change the power mode.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Russell King 2019-11-10 14:06:44 +00:00 • committed by David S. Miller

parent ed32abb1ee

commit 7cfa9c92d0

1 changed files with 20 additions and 11 deletions

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drivers/net/phy/sfp.c

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