[linux-audio-dev] muse and /dev/rtc

[Matthias Nagorni]

On Mon, 22 Nov 2004, Alfons Adriaensen wrote:

> On Sun, Nov 21, 2004 at 03:02:24PM -0500, Lee Revell wrote:
> 
> > > CONFIG_APM_RTC_IS_GMT=y
> > > CONFIG_RTC=m
> > > CONFIG_GEN_RTC=m
> > > CONFIG_GEN_RTC_X=y
> > > CONFIG_HPET_RTC_IRQ=y
> > > CONFIG_SENSORS_RTC8564=m
> > > CONFIG_SND_RTCTIMER=m
> > > 
> > 
> > OK this all looks good.  I don't know, it sounds like a bug in Muse.
> > There must be some incompatibility using a binary Suse Muse package with
> > a Mandrake kernel.
> 
> Maybe it doesn't look good. I found this (the message is in French, 
> but the quoted part says it all): if CONFIG_HPET_RTC_IRQ is defined,
> then RTC_IRQ is undefined which in turn leads to the failing ioctl().

Exactly: If you set

CONFIG_HPET_RTC_IRQ=n

and recompile the (SuSE 9.2-)kernel, MusE should work.

Matthias

> 
> 
> 
> <http://www.guilde.asso.fr/lurker/message/20041105.180307.b02820a2.en.html>
> 
> 
> 
> include/asm-i386/mc146818rtc.h :
> 
>     #define RTC_IRQ 8
> 
> 
> drivers/char/rtc.c :
> 
>     #ifdef CONFIG_HPET_RTC_IRQ
>     #undef RTC_IRQ
>     #endif
> 
> 
> .config :
> 
>     CONFIG_HPET=y
>     CONFIG_HPET_RTC_IRQ=y
> 
> 
> drivers/char/Kconfig :
> 
>     config HPET
>         bool "HPET - High Precision Event Timer" if (X86 || IA64)
>         default n
>         depends on ACPI_INTERPRETER
>         help
>           If you say Y here, you will have a miscdevice named
>           "/dev/hpet/".  Each open selects one of the timers supported
>           by the HPET.  The timers are non-periodioc and/or periodic.
> 
> 
>     config HPET_RTC_IRQ
>         bool "HPET Control RTC IRQ" if !HPET_EMULATE_RTC
>         default n
>         depends on HPET
>         help
>           If you say Y here, you will disable RTC_IRQ in
>           drivers/char/rtc.c. It is assumed the platform called
>           hpet_alloc with the RTC IRQ values for the HPET timers.
> 
> 
> 

-- 
Dr. Matthias Nagorni
SuSE Linux GmbH
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