| commit | 6115b7a54b2a3f0b6fc783715f606d3760962dc9 | |
| author | Chris Metcalf <cmetcalf@tilera.com> | |
| Fri, 25 May 2012 16:32:09 +0000 (25 12:32 -0400) | ||
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Fri, 1 Jun 2012 07:13:00 +0000 (1 15:13 +0800) | ||
| tree | ca535872e161ffc6ad71c85a6af714c78a4c59d6 | treesnapshot (tar.gz zip) |
| parent | 0d7755e450865b76b98e3fea2e166b0a2266972d | commitdiff |
tile: fix bug where fls(0) was not returning 0
commit 9f1d62bed7f015d11b9164078b7fea433b474114 upstream.
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().
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 9f1d62bed7f015d11b9164078b7fea433b474114 upstream.
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().
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| arch/tile/include/asm/bitops.h | diffblobblamehistory |