On Mon, Apr 04, 2005 at 06:08:43PM +0100, Daniel Drake wrote:
> David Ford wrote:
> > It seems that 2.6.12-rc1 introduced an ALSA bug generating an oops for a
> > null pointer.
> >
> > codec_semaphore: semaphore is not ready [0x1][0x300300]
> > codec_read 0: semaphore is not ready for register 0x2c
> > Unable to handle kernel NULL pointer dereference at virtual address
> > 00000000
> >
> > This happens on multiple machines, 32b and 64bit. I'll be happy to
> > provide further information if needed.
>
> This only happens when you mismatch your kernel and alsa-lib versions, e.g.
> running alsa-lib-1.0.9-rc2 with alsa-1.0.8 in-kernel drivers, or possibly
> vice-versa.
Are you saying the userspace interface of the ALSA kernel drivers has
incompatible changes between minor versions of ALSA?
If this is true, that's a serious bug.
> Daniel
cu
Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed
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