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authorArnd Bergmann <arnd@arndb.de>2016-06-24 11:24:08 +0200
committerDavid S. Miller <davem@davemloft.net>2016-06-28 05:47:52 -0400
commita5e4bd991362223346e1d3561e61d7a25797fe25 (patch)
treee427d46b7060163c55e6627bfc0e982df454651b /drivers/of/Kconfig
parent56e2f23b7225d2e7b42826aee065cbf96834114d (diff)
of_mdio: select fixed phy support unconditionally
Calling the fixed-phy functions when CONFIG_FIXED_PHY=m as a previous change tried cannot work if the caller is in built-in code: drivers/of/built-in.o: In function `of_phy_register_fixed_link': of_reserved_mem.c:(.text+0x85e0): undefined reference to `fixed_phy_register' Making of_mdio depend on 'FIXED_PHY || !FIXED_PHY' would solve this dependency by enforcing that OF_MDIO itself becomes a loadable module when FIXED_PHY=y, but that creates a different dependency as it breaks any built-in ethernet driver that uses of_mdio. Making FIXED_PHY a bool option also cannot work, since it depends on PHYLIB, which again is tristate. This version now uses 'select FIXED_PHY' to ensure that the fixed-phy portion of of_mdio is not optional. The main downside of this is a small increase in code size for cases that do not need fixed phy support, but it should avoid all of the link-time problems. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: d1bd330a229f ("of_mdio: Enable fixed PHY support if driver is a module") Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/of/Kconfig')
-rw-r--r--drivers/of/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
index b3bec3aaa45d..bc07ad30c9bf 100644
--- a/drivers/of/Kconfig
+++ b/drivers/of/Kconfig
@@ -74,6 +74,7 @@ config OF_NET
config OF_MDIO
def_tristate PHYLIB
depends on PHYLIB
+ select FIXED_PHY
help
OpenFirmware MDIO bus (Ethernet PHY) accessors