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drm/amdgpu: Remove volatile from RLC files

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The RLC uses volatile with some pointers that are not directly related
to any of the situations where volatile is advised to be used [1]. For
this reason, this commit removes all the volatile occurrences associated
with RLC.

1. https://docs.kernel.org/process/volatile-considered-harmful.html

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Rodrigo Siqueira <siqueira@igalia.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Rodrigo Siqueira 2025-09-08 17:15:37 -06:00 committed by Alex Deucher
parent d8586afe38
commit b8fc541089
2 changed files with 4 additions and 4 deletions
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4
drivers/gpu/drm/amd/amdgpu/amdgpu_rlc.c
View File

@ -89,7 +89,7 @@ void amdgpu_gfx_rlc_exit_safe_mode(struct amdgpu_device *adev, int xcc_id)
int amdgpu_gfx_rlc_init_sr(struct amdgpu_device *adev, u32 dws)
{
const u32 *src_ptr;
volatile u32 *dst_ptr;
u32 *dst_ptr;
u32 i;
int r;
@ -189,7 +189,7 @@ int amdgpu_gfx_rlc_init_cpt(struct amdgpu_device *adev)
void amdgpu_gfx_rlc_setup_cp_table(struct amdgpu_device *adev)
{
const __le32 *fw_data;
volatile u32 *dst_ptr;
u32 *dst_ptr;
int me, i, max_me;
u32 bo_offset = 0;
u32 table_offset, table_size;

4
drivers/gpu/drm/amd/amdgpu/amdgpu_rlc.h
View File

@ -275,7 +275,7 @@ struct amdgpu_rlc {
/* for power gating */
struct amdgpu_bo *save_restore_obj;
uint64_t save_restore_gpu_addr;
volatile uint32_t *sr_ptr;
uint32_t *sr_ptr;
const u32 *reg_list;
u32 reg_list_size;
/* for clear state */
@ -287,7 +287,7 @@ struct amdgpu_rlc {
/* for cp tables */
struct amdgpu_bo *cp_table_obj;
uint64_t cp_table_gpu_addr;
volatile uint32_t *cp_table_ptr;
uint32_t *cp_table_ptr;
u32 cp_table_size;
/* safe mode for updating CG/PG state */