Re: 2.6.24-rc5 "videobuf_read_start" [drivers/media/video/videobuf-dvb.ko] undefined!

[Mauro Carvalho Chehab <mchehab@infradead.org>]

Em Qua, 2007-12-12 às 00:20 -0500, Shane escreveu:
> In 2.6.24-rc5+, I hit this problem with videobuf_read_start
> not being exported. Patch attached, only compile tested.
> 
>   CHK     include/linux/version.h
>   CHK     include/linux/utsrelease.h
>   CALL    scripts/checksyscalls.sh
>   CHK     include/linux/compile.h
>   CC [M]  drivers/media/video/videobuf-core.o
>   Building modules, stage 2.
> Kernel: arch/x86/boot/bzImage is ready  (#1)
>   MODPOST 202 modules
> ERROR: "videobuf_read_start" [drivers/media/video/videobuf-dvb.ko] undefined!
> make[1]: *** [__modpost] Error 1
> make: *** [modules] Error 2
Thanks for reporting.

The patch is incomplete. I've just sent Linus the complete fix for this.

The issue here is that videobuf_read_start were replaced by
__videobuf_read_start, but mutex is missing at the last.

The patch I've just sent adds a mutex-safe version of
videobuf_read_start, adding the proper EXPORT_SYMBOL_GPL().
 
Cheers,
Mauro

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