That function never fails, drop the error return.

Signed-off-by: Christian König <christian.koe...@amd.com>
Reviewed-by: Alex Deucher <alexander.deuc...@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehl...@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 7 ++++---
 drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h | 6 +++---
 drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c  | 7 +++----
 drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c  | 7 +++----
 drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c   | 9 ++++-----
 drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c   | 9 ++++-----
 drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c   | 8 +++-----
 7 files changed, 24 insertions(+), 29 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
index 07f657e2f3a2..eaba4e9f247e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
@@ -642,9 +642,10 @@ int amdgpu_gmc_flush_gpu_tlb_pasid(struct amdgpu_device 
*adev, uint16_t pasid,
 
        if (!adev->gmc.flush_pasid_uses_kiq || !ring->sched.ready ||
            !down_read_trylock(&adev->reset_domain->sem)) {
-               return adev->gmc.gmc_funcs->flush_gpu_tlb_pasid(adev, pasid,
-                                                               flush_type,
-                                                               all_hub, inst);
+               adev->gmc.gmc_funcs->flush_gpu_tlb_pasid(adev, pasid,
+                                                        flush_type, all_hub,
+                                                        inst);
+               return 0;
        }
 
        /* 2 dwords flush + 8 dwords fence */
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h
index 7732d4ef845e..dd0ede75e5d7 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h
@@ -130,9 +130,9 @@ struct amdgpu_gmc_funcs {
        void (*flush_gpu_tlb)(struct amdgpu_device *adev, uint32_t vmid,
                                uint32_t vmhub, uint32_t flush_type);
        /* flush the vm tlb via pasid */
-       int (*flush_gpu_tlb_pasid)(struct amdgpu_device *adev, uint16_t pasid,
-                                       uint32_t flush_type, bool all_hub,
-                                       uint32_t inst);
+       void (*flush_gpu_tlb_pasid)(struct amdgpu_device *adev, uint16_t pasid,
+                                   uint32_t flush_type, bool all_hub,
+                                   uint32_t inst);
        /* flush the vm tlb via ring */
        uint64_t (*emit_flush_gpu_tlb)(struct amdgpu_ring *ring, unsigned vmid,
                                       uint64_t pd_addr);
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c 
b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
index 5cc77c207dbf..87c1b945e82d 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
@@ -339,9 +339,9 @@ static void gmc_v10_0_flush_gpu_tlb(struct amdgpu_device 
*adev, uint32_t vmid,
  *
  * Flush the TLB for the requested pasid.
  */
-static int gmc_v10_0_flush_gpu_tlb_pasid(struct amdgpu_device *adev,
-                                       uint16_t pasid, uint32_t flush_type,
-                                       bool all_hub, uint32_t inst)
+static void gmc_v10_0_flush_gpu_tlb_pasid(struct amdgpu_device *adev,
+                                         uint16_t pasid, uint32_t flush_type,
+                                         bool all_hub, uint32_t inst)
 {
        uint16_t queried;
        int vmid, i;
@@ -364,7 +364,6 @@ static int gmc_v10_0_flush_gpu_tlb_pasid(struct 
amdgpu_device *adev,
                                                flush_type);
                }
        }
-       return 0;
 }
 
 static uint64_t gmc_v10_0_emit_flush_gpu_tlb(struct amdgpu_ring *ring,
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c 
b/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c
index a129166a721c..7d61f66625fa 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c
@@ -299,9 +299,9 @@ static void gmc_v11_0_flush_gpu_tlb(struct amdgpu_device 
*adev, uint32_t vmid,
  *
  * Flush the TLB for the requested pasid.
  */
-static int gmc_v11_0_flush_gpu_tlb_pasid(struct amdgpu_device *adev,
-                                       uint16_t pasid, uint32_t flush_type,
-                                       bool all_hub, uint32_t inst)
+static void gmc_v11_0_flush_gpu_tlb_pasid(struct amdgpu_device *adev,
+                                         uint16_t pasid, uint32_t flush_type,
+                                         bool all_hub, uint32_t inst)
 {
        uint16_t queried;
        int vmid, i;
@@ -324,7 +324,6 @@ static int gmc_v11_0_flush_gpu_tlb_pasid(struct 
amdgpu_device *adev,
                                                flush_type);
                }
        }
-       return 0;
 }
 
 static uint64_t gmc_v11_0_emit_flush_gpu_tlb(struct amdgpu_ring *ring,
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c 
b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
index 9e19a752f94b..fa3586efacd2 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
@@ -423,15 +423,15 @@ static int gmc_v7_0_mc_init(struct amdgpu_device *adev)
  *
  * Flush the TLB for the requested pasid.
  */
-static int gmc_v7_0_flush_gpu_tlb_pasid(struct amdgpu_device *adev,
-                                       uint16_t pasid, uint32_t flush_type,
-                                       bool all_hub, uint32_t inst)
+static void gmc_v7_0_flush_gpu_tlb_pasid(struct amdgpu_device *adev,
+                                        uint16_t pasid, uint32_t flush_type,
+                                        bool all_hub, uint32_t inst)
 {
        u32 mask = 0x0;
        int vmid;
 
        if(!down_read_trylock(&adev->reset_domain->sem))
-               return 0;
+               return;
 
        for (vmid = 1; vmid < 16; vmid++) {
                u32 tmp = RREG32(mmATC_VMID0_PASID_MAPPING + vmid);
@@ -444,7 +444,6 @@ static int gmc_v7_0_flush_gpu_tlb_pasid(struct 
amdgpu_device *adev,
        WREG32(mmVM_INVALIDATE_REQUEST, mask);
        RREG32(mmVM_INVALIDATE_RESPONSE);
        up_read(&adev->reset_domain->sem);
-       return 0;
 }
 
 /*
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c 
b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
index 2d51531a1f2d..ffcd79d28b9a 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
@@ -613,15 +613,15 @@ static int gmc_v8_0_mc_init(struct amdgpu_device *adev)
  *
  * Flush the TLB for the requested pasid.
  */
-static int gmc_v8_0_flush_gpu_tlb_pasid(struct amdgpu_device *adev,
-                                       uint16_t pasid, uint32_t flush_type,
-                                       bool all_hub, uint32_t inst)
+static void gmc_v8_0_flush_gpu_tlb_pasid(struct amdgpu_device *adev,
+                                        uint16_t pasid, uint32_t flush_type,
+                                        bool all_hub, uint32_t inst)
 {
        u32 mask = 0x0;
        int vmid;
 
        if(!down_read_trylock(&adev->reset_domain->sem))
-               return 0;
+               return;
 
        for (vmid = 1; vmid < 16; vmid++) {
                u32 tmp = RREG32(mmATC_VMID0_PASID_MAPPING + vmid);
@@ -634,7 +634,6 @@ static int gmc_v8_0_flush_gpu_tlb_pasid(struct 
amdgpu_device *adev,
        WREG32(mmVM_INVALIDATE_REQUEST, mask);
        RREG32(mmVM_INVALIDATE_RESPONSE);
        up_read(&adev->reset_domain->sem);
-       return 0;
 }
 
 /*
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c 
b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index 37b33eb84210..448966069312 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -952,9 +952,9 @@ static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device 
*adev, uint32_t vmid,
  *
  * Flush the TLB for the requested pasid.
  */
-static int gmc_v9_0_flush_gpu_tlb_pasid(struct amdgpu_device *adev,
-                                       uint16_t pasid, uint32_t flush_type,
-                                       bool all_hub, uint32_t inst)
+static void gmc_v9_0_flush_gpu_tlb_pasid(struct amdgpu_device *adev,
+                                        uint16_t pasid, uint32_t flush_type,
+                                        bool all_hub, uint32_t inst)
 {
        uint16_t queried;
        int i, vmid;
@@ -978,8 +978,6 @@ static int gmc_v9_0_flush_gpu_tlb_pasid(struct 
amdgpu_device *adev,
                                               flush_type);
                }
        }
-
-       return 0;
 }
 
 static uint64_t gmc_v9_0_emit_flush_gpu_tlb(struct amdgpu_ring *ring,
-- 
2.34.1

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