On Wed, Sep 24, 2014 at 10:55:09AM -0700, Florian Fainelli wrote:

quoted

Hello Ralf, Jayachandran, Ganesan

Here are two small fixes for modular USB and AHCI builds that I encountered
while playing with a FVP board.

These are based off upstream-sfr/mips-for-linux-next

We have a slightly different fix for this in our internal repository, I
was planning to submit it soon:


index be358a8..5c876d3 100644

--- a/arch/mips/netlogic/xlp/Makefile
+++ b/arch/mips/netlogic/xlp/Makefile

@@ -1,6 +1,6 @@
 obj-y				+= setup.o nlm_hal.o cop2-ex.o dt.o
 obj-$(CONFIG_SMP)		+= wakeup.o
-obj-$(CONFIG_USB)		+= usb-init.o
-obj-$(CONFIG_USB)		+= usb-init-xlp2.o
-obj-$(CONFIG_SATA_AHCI)		+= ahci-init.o
-obj-$(CONFIG_SATA_AHCI)		+= ahci-init-xlp2.o
+obj-$(subst m,y,$(CONFIG_USB))	+= usb-init.o
+obj-$(subst m,y,$(CONFIG_USB))	+= usb-init-xlp2.o
+obj-$(subst m,y,$(CONFIG_SATA_AHCI))	+= ahci-init.o
+obj-$(subst m,y,$(CONFIG_SATA_AHCI))	+= ahci-init-xlp2.o

This will add the init code when USB or SATA is enabled as module or
is built-in, so I think this is be a better solution.