Hello,

originally intended for my PPSkit patch I found out that the "normal" 
kernel might like this patch as well:

nanosleep() currently uses "udelay()" from <asm/delay.h> as there is no 
"ndelay()". I implemented "ndelay()" for i386 and adjusted the other 
macros. During that I found that some files have or use their own 
"delay()" routines. The original delay is dangerous, because depending 
on the CPU it requires loop cycles or clock cycles as argument, giving 
non-reliable code. Affected sources:

drivers/net/hamradio/yam.c: "delay(100)"
drivers/scsi/wd

I also found that the scaling factor used in the existing code should 
be rounded up (increased by one) for a more exact value.

With the new code there are two possible disadvantages: 1) Reduced 
accuracy, and 2) possible overflow. I hope both are not really a 
problem.

Regards,
Ulrich