From c1509f3f6fa41addf863aee5af7f406e56d110b4 Mon Sep 17 00:00:00 2001 From: "Stanley.Yang" Date: Thu, 12 Mar 2020 18:18:39 +0800 Subject: [PATCH] drm/amdgpu: fix warning in ras_debugfs_create_all() 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 Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c index c3dca4ca..43055a0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c @@ -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", -- 2.7.4