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 --- drivers/gpu/drm/radeon/r600.c | 8 +------- drivers/gpu/drm/radeon/r600_cp.c | 7 +------ 2 files changed, 2 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c index cda280d..169ecc9 100644 --- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -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) diff --git a/drivers/gpu/drm/radeon/r600_cp.c b/drivers/gpu/drm/radeon/r600_cp.c index 2514123..be85f75 100644 --- a/drivers/gpu/drm/radeon/r600_cp.c +++ b/drivers/gpu/drm/radeon/r600_cp.c @@ -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,