[PATCH] drm/amdgpu: Fix missing error code in 'gmc_v6/7/8/9/10 _0_hw_init()' function

[Srinivasan Shanmugam]

The gmc_v6/7/8/9/10 _0_hw_init() function in emulation checks whether
all of the memory range of shared system memory could be accessed by
GPU, from this aspect, -EIO is returned for error scenarios.

Fixes the below:
drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c:919 gmc_v6_0_hw_init() warn: missing error code? 'r'
drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c:1103 gmc_v7_0_hw_init() warn: missing error code? 'r'
drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c:1223 gmc_v8_0_hw_init() warn: missing error code? 'r'
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c:2344 gmc_v9_0_hw_init() warn: missing error code? 'r'

Cc: Xiaojian Du <Xiaojian.Du at amd.com>
Cc: Lijo Lazar <lijo.lazar at amd.com>
Cc: Christian König <christian.koenig at amd.com>
Cc: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c |  2 +-
 drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c  | 11 +++++++----
 drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c  | 11 +++++++----
 drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c  | 11 +++++++----
 drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c  | 11 +++++++----
 5 files changed, 29 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
index a5a05c16c10d..6172816f54da 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
@@ -1004,7 +1004,7 @@ static int gmc_v10_0_hw_init(void *handle)
 	if (amdgpu_emu_mode == 1) {
 		r = amdgpu_gmc_vram_checking(adev);
 		if (r)
-			return r;
+			return -EIO;
 	}
 
 	if (adev->umc.funcs && adev->umc.funcs->init_registers)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
index 42e103d7077d..68e3fff02308 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
@@ -913,10 +913,13 @@ static int gmc_v6_0_hw_init(void *handle)
 	if (r)
 		return r;
 
-	if (amdgpu_emu_mode == 1)
-		return amdgpu_gmc_vram_checking(adev);
-	else
-		return r;
+	if (amdgpu_emu_mode == 1) {
+		r = amdgpu_gmc_vram_checking(adev);
+		if (r)
+			return -EIO;
+	}
+
+	return 0;
 }
 
 static int gmc_v6_0_hw_fini(void *handle)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
index efc16e580f1e..1a6bee9b4777 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
@@ -1097,10 +1097,13 @@ static int gmc_v7_0_hw_init(void *handle)
 	if (r)
 		return r;
 
-	if (amdgpu_emu_mode == 1)
-		return amdgpu_gmc_vram_checking(adev);
-	else
-		return r;
+	if (amdgpu_emu_mode == 1) {
+		r = amdgpu_gmc_vram_checking(adev);
+		if (r)
+			return -EIO;
+	}
+
+	return 0;
 }
 
 static int gmc_v7_0_hw_fini(void *handle)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
index ff4ae73d27ec..192041c707a6 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
@@ -1217,10 +1217,13 @@ static int gmc_v8_0_hw_init(void *handle)
 	if (r)
 		return r;
 
-	if (amdgpu_emu_mode == 1)
-		return amdgpu_gmc_vram_checking(adev);
-	else
-		return r;
+	if (amdgpu_emu_mode == 1) {
+		r = amdgpu_gmc_vram_checking(adev);
+		if (r)
+			return -EIO;
+	}
+
+	return 0;
 }
 
 static int gmc_v8_0_hw_fini(void *handle)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index 473a774294ce..f2ef1d8107f8 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -2338,10 +2338,13 @@ static int gmc_v9_0_hw_init(void *handle)
 	if (r)
 		return r;
 
-	if (amdgpu_emu_mode == 1)
-		return amdgpu_gmc_vram_checking(adev);
-	else
-		return r;
+	if (amdgpu_emu_mode == 1) {
+		r = amdgpu_gmc_vram_checking(adev);
+		if (r)
+			return -EIO;
+	}
+
+	return 0;
 }
 
 /**
-- 
2.34.1