From: Junwei Zhang <Jerry.Zhang@amd.com>
Date: Fri, 14 Jul 2017 18:27:57 +0800
Subject: drm/amdgpu: remove unncessary code in psp v10 ring init func
Git-commit: f04f56919c33416a4398a79290315254c09e2a4d
Patch-mainline: v4.14-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/amdgpu/psp_v10_0.c |   20 --------------------
 1 file changed, 20 deletions(-)

--- a/drivers/gpu/drm/amd/amdgpu/psp_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/psp_v10_0.c
@@ -110,7 +110,6 @@ int psp_v10_0_prep_cmd_buf(struct amdgpu
 int psp_v10_0_ring_init(struct psp_context *psp, enum psp_ring_type ring_type)
 {
 	int ret = 0;
-	unsigned int psp_ring_reg = 0;
 	struct psp_ring *ring;
 	struct amdgpu_device *adev = psp->adev;
 
@@ -130,25 +129,6 @@ int psp_v10_0_ring_init(struct psp_conte
 		return ret;
 	}
 
-	/* Write low address of the ring to C2PMSG_69 */
-	psp_ring_reg = lower_32_bits(ring->ring_mem_mc_addr);
-	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_69, psp_ring_reg);
-	/* Write high address of the ring to C2PMSG_70 */
-	psp_ring_reg = upper_32_bits(ring->ring_mem_mc_addr);
-	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_70, psp_ring_reg);
-	/* Write size of ring to C2PMSG_71 */
-	psp_ring_reg = ring->ring_size;
-	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_71, psp_ring_reg);
-	/* Write the ring initialization command to C2PMSG_64 */
-	psp_ring_reg = ring_type;
-	psp_ring_reg = psp_ring_reg << 16;
-	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_64, psp_ring_reg);
-	/* Wait for response flag (bit 31) in C2PMSG_64 */
-	psp_ring_reg = 0;
-	while ((psp_ring_reg & 0x80000000) == 0) {
-		psp_ring_reg = RREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_64);
-	}
-
 	return 0;
 }