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drm/amdgpu: fix warning in ras_debugfs_create_all()

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Fix the warning
"warn: variable dereferenced before check 'obj' (see line 1131)"
by removing unnecessary checks as amdgpu_ras_debugfs_create_all()
is only called from amdgpu_debugfs_init() where obj member in
con->head list is not NULL.
Use list_for_each_entry() instead list_for_each_entry_safe() as obj
do not to be freeing or removing from list during this process.

Signed-off-by: Stanley.Yang <Stanley.Yang@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Stanley.Yang 2020-03-12 18:18:39 +08:00 committed by Alex Deucher
parent 565d194155
commit c1509f3f6f
1 changed files with 2 additions and 5 deletions
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7
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
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@ -1116,7 +1116,7 @@ void amdgpu_ras_debugfs_create(struct amdgpu_device *adev,
void amdgpu_ras_debugfs_create_all(struct amdgpu_device *adev)
{
struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
struct ras_manager *obj, *tmp;
struct ras_manager *obj;
struct ras_fs_if fs_info;
/*
@ -1128,10 +1128,7 @@ void amdgpu_ras_debugfs_create_all(struct amdgpu_device *adev)
amdgpu_ras_debugfs_create_ctrl_node(adev);
list_for_each_entry_safe(obj, tmp, &con->head, node) {
if (!obj)
continue;
list_for_each_entry(obj, &con->head, node) {
if (amdgpu_ras_is_supported(adev, obj->head.block) &&
(obj->attr_inuse == 1)) {
sprintf(fs_info.debugfs_name, "%s_err_inject",