[PATCH] softlockup: stop softlockup messages due to touch_ts math overflow

[Stefan Bader]

Colin Ian King wrote:
> Hi,
> 
> This patch will fix a math overflow error that causes spurious soft
> lockup error messages. It catches a corner case, for example, just when
> the TSC heads towards a 64 bit wrap-around when the upper 32 bits are
> set to 0xffffffff.  While this normally does not happen (since it
> requires an uptime of possibly thousands of years, it may happen if the
> TSC warps during S3).
> 
> If this looks sane, I'll sent it upstream.
> 
> Colin
> 
It looks like a sensible way to fix this. Upstream opinion may vary...

Stefan