Re: Another Brute Force And Ignorance(tm) derived question...

[Peter Jones <pjones@redhat.com>]

On Sun, 11 Apr 1999, David Miller wrote:

>    Date: Mon, 12 Apr 1999 00:04:05 -0400 (EDT)
>    From: Peter Jones <pjones@redhat.com>
> 
>    > Might want to double-check on strace, have it print out the raw hex
>    > value for the ioctl cmd code and make sure it matches up.
> 
>    open("/dev/mixer", O_RDWR)              = 4
>    ioctl(0x4, 0x40044dfe, 0x2563c)         = -1 (errno 22)
> 
>    No dice, matches up just fine.  Any more ideas?
> 
> Could be a compiler bug then, put some debugging printk's into
> sys32_ioctl(), one right before the big switch which goes:
> 
>    printk("sys32_ioctl(before switch): cmd(%08x) "
>           "SOUND_MIXER_READ_DEVMASK(%08x)\n",
>           cmd, SOUND_MIXER_READ_DEVMASK);
> 
> Then put a similar printk right below the case for
> SOUND_MIXER_READ_DEVMASK itself.
> 
> This bug would explain some problems I had with the gnome mixer applet
> and some other sound programs on sparc64...

Hrm.  Odd.   When aumix calls that, its sending 0x20044dfe, which is what
kernelspace is _expecting_ to get.  somewhere in the middle its becoming
0x40044dfe , which is falling through the case.  Any ideas?

Anyway, I'm going to bed.  I've managed to be in line for a 9:30 meating
tomorrow.

 -- Peter

Stay sane inside insanity.
		-- RHPS