Re: [microblaze-uclinux] Block device driver

["Pavel Ivanchenko" <pi-home@xxxxxxx>]

Hello John,

Thanks for you cooperation.
"Set version information" id off in my experiments.
When I declare  "init", "clean" routines and "register_blkdev" - OK
When I declare "block_device_operations " structure - OK
When declare "blk_init_queue " - error "unresolved symbol divsi3_proc"

Thank you,
Pavel.


----- Original Message ----- 
From: "John Williams" <jwilliams@xxxxxxxxxxxxxx>
To: <microblaze-uclinux@xxxxxxxxxxxxxx>
Sent: Thursday, October 27, 2005 10:44 AM
Subject: Re: [microblaze-uclinux] Block device driver


> Hi Pavel,
>
> When using loadable modules, make sure you disable module symbol 
> versioning - under kernel config menu -> loadable module support -> Set 
> version information (make sure it is OFF)
>
> Regards,
>
> John
>
> Pavel Ivanchenko wrote:
> > Hello.
> > I'm trying write driver to MMC card.
> > Begin with examples from "Linux Device Drivers" book.
> > It have block driver example "sbull - Simple Block Utility for Loading 
> > Localities" (attach to mail).
> > I creat next Make file to compile object file:
> >
> >     ROOTDIR=/usr/src/uClinux-dist
> >     UCLINUX_BUILD_USER=1
> >     include $(ROOTDIR)/.config
> >     LIBCDIR = $(CONFIG_LIBCDIR)
> >     include $(ROOTDIR)/config.arch
> >     CFLAGS += -D__KERNEL__ -DMODULE -DLINUX sbull.o: sbull.c $(CC) 
> > $(CFLAGS) -c sbull.c
> >     clean:
> >      rm -f *.o core
> >      Some warning printing after compile, but object file create.
> > I'm dowmload it to /var and try "insmod ./sbull.o"
> > But return:
> > Using ./sbull.o
> > insmod: unresolved symbol divsi3_proc
> > insmod: unresolved symbol mulsi3_proc
> >                           Please prompt direction to resolve this.
> > I think, I do not turn on some elements of kernel.
> >  Thank, Pavel.
>
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