From d68cf992ded575928cf4ddf7c64faff0d8dcce14 Mon Sep 17 00:00:00 2001
From: Gavin Wan <Gavin.Wan@amd.com>
Date: Wed, 13 Apr 2022 11:09:22 -0400
Subject: [PATCH] drm/amd/amdgpu: Remove static from variable in RLCG Reg RW
[why]
These static variables save the RLC Scratch registers address.
When we install multiple GPUs (for example: XGMI setting) and
multiple GPUs call the function at same time. The RLC Scratch
registers address are changed each other. Then it caused
reading/writing from/to wrong GPU.
[how]
Removed the static from the variables. The variables are
on the stack.
Fixes: 5d447e29670148 ("drm/amdgpu: add helper for rlcg indirect reg access")
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Gavin Wan <Gavin.Wan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
index ab95beac63070..ea92edcc04320 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -870,11 +870,11 @@ static u32 amdgpu_virt_rlcg_reg_rw(struct amdgpu_device *adev, u32 offset, u32 v
uint32_t timeout = 50000;
uint32_t i, tmp;
uint32_t ret = 0;
- static void *scratch_reg0;
- static void *scratch_reg1;
- static void *scratch_reg2;
- static void *scratch_reg3;
- static void *spare_int;
+ void *scratch_reg0;
+ void *scratch_reg1;
+ void *scratch_reg2;
+ void *scratch_reg3;
+ void *spare_int;
if (!adev->gfx.rlc.rlcg_reg_access_supported) {
dev_err(adev->dev,
--
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