[PATCH 1/2] drm/amdkfd: Use bitmap_zalloc() when applicable

[Christophe JAILLET]

'doorbell_bitmap' is a bitmap. So use 'bitmap_zalloc()' to simplify code,
improve the semantic and avoid some open-coded arithmetic in allocator
arguments.

Also change the corresponding 'kfree()' into 'bitmap_free()' to keep
consistency.

Signed-off-by: Christophe JAILLET <christophe.jail...@wanadoo.fr>
---
 drivers/gpu/drm/amd/amdkfd/kfd_process.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c 
b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
index f29b3932e3dc..172ee8763523 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
@@ -1011,7 +1011,7 @@ static void kfd_process_destroy_pdds(struct kfd_process 
*p)
                        free_pages((unsigned long)pdd->qpd.cwsr_kaddr,
                                get_order(KFD_CWSR_TBA_TMA_SIZE));
 
-               kfree(pdd->qpd.doorbell_bitmap);
+               bitmap_free(pdd->qpd.doorbell_bitmap);
                idr_destroy(&pdd->alloc_idr);
 
                kfd_free_process_doorbells(pdd->dev, pdd->doorbell_index);
@@ -1434,9 +1434,8 @@ static int init_doorbell_bitmap(struct qcm_process_device 
*qpd,
        if (!KFD_IS_SOC15(dev->device_info->asic_family))
                return 0;
 
-       qpd->doorbell_bitmap =
-               kzalloc(DIV_ROUND_UP(KFD_MAX_NUM_OF_QUEUES_PER_PROCESS,
-                                    BITS_PER_BYTE), GFP_KERNEL);
+       qpd->doorbell_bitmap = bitmap_zalloc(KFD_MAX_NUM_OF_QUEUES_PER_PROCESS
+                                            GFP_KERNEL);
        if (!qpd->doorbell_bitmap)
                return -ENOMEM;
 
-- 
2.30.2