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The below compile time error can be seen when PHYLIB is configured as a
module.
ld: drivers/net/pcs/pcs-xpcs.o: in function `xpcs_read':
pcs-xpcs.c:(.text+0x29): undefined reference to `mdiobus_read'
ld: drivers/net/pcs/pcs-xpcs.o: in function `xpcs_soft_reset.constprop.7':
pcs-xpcs.c:(.text+0x80): undefined reference to `mdiobus_write'
ld: drivers/net/pcs/pcs-xpcs.o: in function `xpcs_config_aneg':
pcs-xpcs.c:(.text+0x318): undefined reference to `mdiobus_write'
ld: pcs-xpcs.c:(.text+0x38e): undefined reference to `mdiobus_write'
ld: pcs-xpcs.c:(.text+0x3eb): undefined reference to `mdiobus_write'
ld: pcs-xpcs.c:(.text+0x437): undefined reference to `mdiobus_write'
ld: drivers/net/pcs/pcs-xpcs.o:pcs-xpcs.c:(.text+0xb1e): more undefined references to `mdiobus_write' follow
PHYLIB being a module leads to MDIO_BUS being a module as well while the
XPCS is still built-in. What should happen in this configuration is that
PCS_XPCS should be forced to build as module. However, that select only
acts in the opposite way so we should turn it into a depends.
Fix this up by explicitly depending on MDIO_BUS.
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Fixes: 2fa4e4b799e1 ("net: pcs: Move XPCS into new PCS subdirectory")
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Add a Lynx PCS module which exposes the necessary operations to drive
the PCS using phylink.
The majority of the code is extracted from the Felix DSA driver, which
will be also modified in a later patch, and exposed as a separate module
for code reusability purposes.
As such, this aims at feature and bug parity with the existing Felix DSA
driver, and thus USXGMII, SGMII, QSGMII and 2500Base-X (only w/o in-band
AN) are supported by the Lynx PCS module since these were also supported
by Felix.
The module can only be enabled by the drivers in need and not user
selectable.
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Create drivers/net/pcs and move the Synopsys DesignWare XPCS into the
new directory. Move the header file into a subdirectory
include/linux/pcs
Start a naming convention of all PCS files use the prefix pcs-, and
rename the XPCS files to fit.
v2:
Add include/linux/pcs
v4:
Fix include path in stmmac.
Remove PCS_DEVICES to avoid new prompts
Cc: Jose Abreu <Jose.Abreu@synopsys.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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