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drm/radeon: Use hweight32 

Use hweight32 instead of counting for each bit

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Akinobu Mita 2012-11-09 12:10:41 +00:00 committed by Dave Airlie
parent 6311803b12
commit ef8cf3a1c5
2 changed files with 2 additions and 13 deletions
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8
drivers/gpu/drm/radeon/r600.c
View File

@ -1424,13 +1424,7 @@ u32 r6xx_remap_render_backend(struct radeon_device *rdev,
int r600_count_pipe_bits(uint32_t val)
{
int i, ret = 0;
for (i = 0; i < 32; i++) {
ret += val & 1;
val >>= 1;
}
return ret;
return hweight32(val);
}
static void r600_gpu_init(struct radeon_device *rdev)

7
drivers/gpu/drm/radeon/r600_cp.c
View File

@ -721,12 +721,7 @@ static u32 r600_get_tile_pipe_to_backend_map(u32 num_tile_pipes,
static int r600_count_pipe_bits(uint32_t val)
{
int i, ret = 0;
for (i = 0; i < 32; i++) {
ret += val & 1;
val >>= 1;
}
return ret;
return hweight32(val);
}
static void r600_gfx_init(struct drm_device *dev,