diff options
| author | David S. Miller <davem@davemloft.net> | 2013-08-03 21:36:46 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-08-03 21:36:46 -0700 |
| commit | 0e76a3a587fc7abda2badf249053b427baad255e (patch) | |
| tree | 646a1da67dc25654552028225ca4b7a0a8043cc9 /include/drm/drm_fixed.h | |
| parent | fba3679d34511c42bf452e89dda457a1219eb43a (diff) | |
| parent | 72a67a94bcba71a5fddd6b3596a20604d2b5dcd6 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Merge net into net-next to setup some infrastructure Eric
Dumazet needs for usbnet changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/drm/drm_fixed.h')
| -rw-r--r-- | include/drm/drm_fixed.h | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/include/drm/drm_fixed.h b/include/drm/drm_fixed.h index f5e1168c764..d639049a613 100644 --- a/include/drm/drm_fixed.h +++ b/include/drm/drm_fixed.h @@ -84,12 +84,12 @@ static inline int drm_fixp2int(int64_t a) return ((s64)a) >> DRM_FIXED_POINT; } -static inline s64 drm_fixp_msbset(int64_t a) +static inline unsigned drm_fixp_msbset(int64_t a) { unsigned shift, sign = (a >> 63) & 1; for (shift = 62; shift > 0; --shift) - if ((a >> shift) != sign) + if (((a >> shift) & 1) != sign) return shift; return 0; @@ -100,9 +100,9 @@ static inline s64 drm_fixp_mul(s64 a, s64 b) unsigned shift = drm_fixp_msbset(a) + drm_fixp_msbset(b); s64 result; - if (shift > 63) { - shift = shift - 63; - a >>= shift >> 1; + if (shift > 61) { + shift = shift - 61; + a >>= (shift >> 1) + (shift & 1); b >>= shift >> 1; } else shift = 0; @@ -120,7 +120,7 @@ static inline s64 drm_fixp_mul(s64 a, s64 b) static inline s64 drm_fixp_div(s64 a, s64 b) { - unsigned shift = 63 - drm_fixp_msbset(a); + unsigned shift = 62 - drm_fixp_msbset(a); s64 result; a <<= shift; @@ -154,7 +154,7 @@ static inline s64 drm_fixp_exp(s64 x) } if (x < 0) - sum = drm_fixp_div(1, sum); + sum = drm_fixp_div(DRM_FIXED_ONE, sum); return sum; } |