On Thu, Jan 09, 2003 at 08:17:57PM +0000, Alan Cox wrote:
> On Thu, 2003-01-09 at 19:20, Dave Jones wrote:
> > time_diff = ((jiffies_now - kcs_info->last_timeout_jiffies)
>
> Thats valid for unsigned maths
> 0x00000001 - 0xFFFFFFFF = 0x00000002
Just as a general note (not to Alan), this often appears in ethernet
drivers, in their RX and TX producer/consumer ring counters... so don't
be surprised if you see this logic elsewhere in the kernel, too.
Jeff
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