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SubjectRe: [RFC] make PC Speaker driver work on x86-64
Mikael Pettersson wrote:
> I have a pair of Athlon64 machines that dual-boot 32-bit and
> 64-bit kernels. One annoying difference between the kernels
> is that the PC Speaker driver (CONFIG_INPUT_PCSPKR=y) only
> works in the 32-bit kernels. In the 64-bit kernels it remains
> inactive and doesn't even generate any boot-time initialisation
> or error messages.
> Today I debugged that issue, and found that the PC Speaker
> driver's ->probe() routine doesn't even get called in the
> 64-bit kernels. The reason for that is that the arch code
> apparently has to explictly add a "pcspkr" platform device
> in order for the driver core to call the ->probe() routine.
> arch/i386/kernel/setup.c unconditionally adds a "pcspkr"
> device, but the x86_64 kernel has no code at all related to
> the PC Speaker.

Wow, thanks.

I was wondering why my PC speaker didn't seem to work. And here I was,
blaming Fedora...


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