From dade83deb3fe2a160f3944b2f223d629442abaec Mon Sep 17 00:00:00 2001
From: Li Zhong <floridsleeves@gmail.com>
Date: Wed, 21 Sep 2022 21:17:56 -0700
Subject: drivers/amd/pm: check the return value of amdgpu_bo_kmap
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Git-commit: 629c30db7c6812fe82d2dcc0110c9e994a831182
Patch-mainline: v6.1-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225 jsc#PED-2849

amdgpu_bo_kmap() returns error when fails to map buffer object. Add the
error check and propagate the error.

Reviewed-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Li Zhong <floridsleeves@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c b/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
index 1eb4e613b27a..ec055858eb95 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
@@ -1485,6 +1485,7 @@ static int pp_get_prv_buffer_details(void *handle, void **addr, size_t *size)
 {
 	struct pp_hwmgr *hwmgr = handle;
 	struct amdgpu_device *adev = hwmgr->adev;
+	int err;
 
 	if (!addr || !size)
 		return -EINVAL;
@@ -1492,7 +1493,9 @@ static int pp_get_prv_buffer_details(void *handle, void **addr, size_t *size)
 	*addr = NULL;
 	*size = 0;
 	if (adev->pm.smu_prv_buffer) {
-		amdgpu_bo_kmap(adev->pm.smu_prv_buffer, addr);
+		err = amdgpu_bo_kmap(adev->pm.smu_prv_buffer, addr);
+		if (err)
+			return err;
 		*size = adev->pm.smu_prv_buffer_size;
 	}
 
-- 
2.38.1