Hi, I've written a kernel module for doing some i/o stuff for an embedded system. It has an Altera NIOS2 processor and I'm using the port from Microtronix. Kernel version is 2.6.9. The driver is based on he scull_pipe example in LDD3. In stage 1 of the build process the compilation runs fine CC [M] drivers/misc/samira/samirainterface.o /cygdrive/c/altera/kits/nios2/bin/eclipse/plugins/com.microtronix.nios2linux .kernel_0.1.5/linux-2.6.x/drivers/misc/samira/samirainterface.c: In function `sam_isr': /cygdrive/c/altera/kits/nios2/bin/eclipse/plugins/com.microtronix.nios2linux .kernel_0.1.5/linux-2.6.x/drivers/misc/samira/samirainterface.c:103: warning: assignment makes pointer from integer without a cast drivers/misc/samira/.samirainterface.o.d: done. The warning is no problem. In stage 2 I get the following warnings: Building modules, stage 2. MODPOST *** Warning: "request_irq" [drivers/misc/samira/samirainterface.ko] undefined! *** Warning: "free_irq" [drivers/misc/samira/samirainterface.ko] undefined! *** Warning: "outsw" [drivers/misc/samira/samirainterface.ko] undefined! CC drivers/misc/samira/samirainterface.mod.o drivers/misc/samira/.samirainterface.mod.o.d: done. LD [M] drivers/misc/samira/samirainterface.ko make: Leaving directory Because of the missing symbols it's impossible to load the driver. Why are these symbols undefined? How can they be defined? Thanks Markus
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samirainterface.h
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samirainterface.c
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