On Monday 30 July 2007, Alan Stern wrote:
> /* power of two? */
> - while (temp > urb->interval)
> - temp >>= 1;
> - urb->interval = temp;
> + while (max > urb->interval)
> + max >>= 1;
> + urb->interval = max;
#include <linux/log2.h>
if (urb->interval > max)
urb->interval = max
else
urb->interval = ilog2(urb->interval);
or somesuch? That previous code is a bit opaque, and the
loop can often be replaced by a single instruction.
Related: consider making urb->interval and its neighbors
be "u32" or maybe even "u16".
- Dave
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