tree 951254ba2d3ed4fef376351c4ed68b06be3b928d
parent acd1a19e002790dd127b3ff86f95a4d269e7f1d0
author Chris Metcalf <cmetcalf@tilera.com> 1337963529 -0400
committer Chris Metcalf <cmetcalf@tilera.com> 1337972443 -0400

tile: fix bug where fls(0) was not returning 0

This is because __builtin_clz(0) returns 64 for the "undefined" case
of 0, since the builtin just does a right-shift 32 and "clz" instruction.
So, use the alpha approach of casting to u32 and using __builtin_clzll().

Cc: stable@vger.kernel.org
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>