[PATCH 5.11 516/601] drm/amdgpu: fix an error code in init_pmu_entry_by_type_and_add()

Greg Kroah-Hartman
2021-05-12T17:56:51Z

From: Dan Carpenter <dan.carpenter@oracle.com>

[ Upstream commit 90cb3d8aca1baea9471d28f28d5de1528dd5e424 ]

If the kmemdup() fails then this should return a negative error code
but it currently returns success

Fixes: b4a7db71ea06 ("drm/amdgpu: add per device user friendly xgmi events for vega20")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c
index 19c0a3655228..82e9ecf84352 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c
@@ -519,8 +519,10 @@ static int init_pmu_entry_by_type_and_add(struct amdgpu_pmu_entry *pmu_entry,
pmu_entry->pmu.attr_groups = kmemdup(attr_groups, sizeof(attr_groups),
GFP_KERNEL);

- if (!pmu_entry->pmu.attr_groups)
+ if (!pmu_entry->pmu.attr_groups) {
+ ret = -ENOMEM;
goto err_attr_group;
+ }

snprintf(pmu_name, PMU_NAME_SIZE, "%s_%d", pmu_entry->pmu_file_prefix,
adev_to_drm(pmu_entry->adev)->primary->index);
--
2.30.2