Use hweight32 instead of counting for each bit
Signed-off-by: Akinobu Mita <akinobu.m...@gmail.com>
Cc: David Airlie <airl...@linux.ie>
Cc: dri-de...@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,
--
1.7.11.7
--
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