explanation of apm_do_idle()
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Hi,
What's the purpose of
t = jiffies;
in apm_do_idle()?
Looks very strange and incorrect to me,
but I think there's a reason for it.
Sorry for stealing your time, but I really don't get behind it. Thank you!
static int apm_do_idle(void)
{
u32 eax;
if (apm_bios_call_simple(APM_FUNC_IDLE, 0, 0, &eax)) {
static unsigned long t;
/* This always fails on some SMP boards running UP kernels.
* Only report the failure the first 5 times.
*/
if (++t < 5)
{
printk(KERN_DEBUG "apm_do_idle failed (%d)\n",
(eax >> 8) & 0xff);
t = jiffies;
}
return -1;
}
clock_slowed = (apm_info.bios.flags & APM_IDLE_SLOWS_CLOCK) != 0;
return clock_slowed;
}- --
Regards Michael Buesch [ http://www.tuxsoft.de.vu ]
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Huh? Nobody out there who could explain it, please? I'm surprised. 8-}
Quoting Michael Buesch <[email protected]>:
Quoted 24 lines
Hi,
What's the purpose of
t = jiffies;in
apm_do_idle()?
Looks very strange and incorrect to me,
but I think there's a reason for it.
Sorry for stealing your time, but I really don't get behind it. Thank you!static int
apm_do_idle(void){ u32 eax; if (apm_bios_call_simple(APM_FUNC_IDLE, 0, 0, &eax)) { static unsigned long t; /* This always fails on some SMP boards running UP kernels. * Only report the failure the first 5 times. */ if (++t < 5) { printk(KERN_DEBUG "apm_do_idle failed (%d)\n",
Quoted 9 lines
(eax >> 8) & 0xff); t = jiffies; } return -1; } clock_slowed = (apm_info.bios.flags & APM_IDLE_SLOWS_CLOCK) != 0; return clock_slowed; }
- --
Regards Michael Buesch [ http://www.tuxsoft.de.vu ]
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