Re: adding a driver to kernel source tree

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--- Omanakuttan <omanakuttan@tataelxsi.co.in> wrote:
> Hi,
> I want to add a driver to kernel source tree.
> I modified the config.in and the menu items are being shown in make 
> menuconfig.
> After menuconfig , my .config contains the following entry
> CONFIG_MYUSB=y
> 
> My make file follows
> 
> M_OBJS := usb.o
> obj-$(CONFIG_MYUSB) += usb.o
> export-objs     := usb.o
> include $(TOPDIR)/Rules.make
> 
> on make bzImage,
> <snip>
> But no file is being compiled in. If i give

 Did you put your driver code in a new directory? If so, you might
have to add the following line to the Makefile one level above your
directory:
'subdir-$(CONFIG_MYUSB) += my_subdir'
 
Without this, 'make bzImage' (or 'make modules') will not enter the
new subdirectory at all.

Hope this helps,
Ravi. 

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