drm/amdgpu: use ARRAY_SIZE

Using the ARRAY_SIZE macro improves the readability of the code.

Found with Coccinelle with the following semantic patch:
@r depends on (org || report)@
type T;
T[] E;
position p;
@@
(
 (sizeof(E)@p /sizeof(*E))
|
 (sizeof(E)@p /sizeof(E[...]))
|
 (sizeof(E)@p /sizeof(T))
)

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Jérémy Lefaure <jeremy.lefaure@lse.epita.fr>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
index 51896b7..b8002ac 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -20,6 +20,7 @@
  * OTHER DEALINGS IN THE SOFTWARE.
  *
  */
+#include <linux/kernel.h>
 #include <linux/firmware.h>
 #include <drm/drmP.h>
 #include "amdgpu.h"
@@ -3952,10 +3953,10 @@ static int gfx_v8_0_init_save_restore_list(struct amdgpu_device *adev)
                                adev->gfx.rlc.reg_list_format_size_bytes >> 2,
                                unique_indices,
                                &indices_count,
-                               sizeof(unique_indices) / sizeof(int),
+                               ARRAY_SIZE(unique_indices),
                                indirect_start_offsets,
                                &offset_count,
-                               sizeof(indirect_start_offsets)/sizeof(int));
+                               ARRAY_SIZE(indirect_start_offsets));
 
        /* save and restore list */
        WREG32_FIELD(RLC_SRM_CNTL, AUTO_INCR_ADDR, 1);
@@ -3977,14 +3978,14 @@ static int gfx_v8_0_init_save_restore_list(struct amdgpu_device *adev)
        /* starting offsets starts */
        WREG32(mmRLC_GPM_SCRATCH_ADDR,
                adev->gfx.rlc.starting_offsets_start);
-       for (i = 0; i < sizeof(indirect_start_offsets)/sizeof(int); i++)
+       for (i = 0; i < ARRAY_SIZE(indirect_start_offsets); i++)
                WREG32(mmRLC_GPM_SCRATCH_DATA,
                                indirect_start_offsets[i]);
 
        /* unique indices */
        temp = mmRLC_SRM_INDEX_CNTL_ADDR_0;
        data = mmRLC_SRM_INDEX_CNTL_DATA_0;
-       for (i = 0; i < sizeof(unique_indices) / sizeof(int); i++) {
+       for (i = 0; i < ARRAY_SIZE(unique_indices); i++) {
                if (unique_indices[i] != 0) {
                        WREG32(temp + i, unique_indices[i] & 0x3FFFF);
                        WREG32(data + i, unique_indices[i] >> 20);

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 99a5b3b..7f15bb2 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -20,6 +20,7 @@
  * OTHER DEALINGS IN THE SOFTWARE.
  *
  */
+#include <linux/kernel.h>
 #include <linux/firmware.h>
 #include <drm/drmP.h>
 #include "amdgpu.h"
@@ -1730,10 +1731,10 @@ static int gfx_v9_0_init_rlc_save_restore_list(struct amdgpu_device *adev)
                                adev->gfx.rlc.reg_list_format_size_bytes >> 2,
                                unique_indirect_regs,
                                &unique_indirect_reg_count,
-                               sizeof(unique_indirect_regs)/sizeof(int),
+                               ARRAY_SIZE(unique_indirect_regs),
                                indirect_start_offsets,
                                &indirect_start_offsets_count,
-                               sizeof(indirect_start_offsets)/sizeof(int));
+                               ARRAY_SIZE(indirect_start_offsets));
 
        /* enable auto inc in case it is disabled */
        tmp = RREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_SRM_CNTL));
@@ -1770,12 +1771,12 @@ static int gfx_v9_0_init_rlc_save_restore_list(struct amdgpu_device *adev)
        /* write the starting offsets to RLC scratch ram */
        WREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_GPM_SCRATCH_ADDR),
                adev->gfx.rlc.starting_offsets_start);
-       for (i = 0; i < sizeof(indirect_start_offsets)/sizeof(int); i++)
+       for (i = 0; i < ARRAY_SIZE(indirect_start_offsets); i++)
                WREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_GPM_SCRATCH_DATA),
                        indirect_start_offsets[i]);
 
        /* load unique indirect regs*/
-       for (i = 0; i < sizeof(unique_indirect_regs)/sizeof(int); i++) {
+       for (i = 0; i < ARRAY_SIZE(unique_indirect_regs); i++) {
                WREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_SRM_INDEX_CNTL_ADDR_0) + i,
                        unique_indirect_regs[i] & 0x3FFFF);
                WREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_SRM_INDEX_CNTL_DATA_0) + i,