drivers/amd/pm: check the return value of amdgpu_bo_kmap

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>

diff --git a/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c b/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
index 1eb4e61..ec05585 100644 (file)
--- 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;
        }