kthread_run() returns an error pointer on failure, not NULL. Replace NULL check with IS_ERR and use PTR_ERR to propagate the real error from kthread_run.

Fixes: ea61341b9014 ("drm/amd/ras: Add thread to handle ras events") Cc: stable@vger.kernel.org Signed-off-by: Miaoqian Lin linmq006@gmail.com --- drivers/gpu/drm/amd/ras/rascore/ras_process.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/ras/rascore/ras_process.c b/drivers/gpu/drm/amd/ras/rascore/ras_process.c index 3267dcdb169c..c001074c8c56 100644 --- a/drivers/gpu/drm/amd/ras/rascore/ras_process.c +++ b/drivers/gpu/drm/amd/ras/rascore/ras_process.c @@ -248,9 +248,10 @@ int ras_process_init(struct ras_core_context *ras_core)

ras_proc->ras_process_thread = kthread_run(ras_process_thread, (void *)ras_core, "ras_process_thread"); - if (!ras_proc->ras_process_thread) { + if (IS_ERR(ras_proc->ras_process_thread)) { RAS_DEV_ERR(ras_core->dev, "Failed to create ras_process_thread.\n"); - ret = -ENOMEM; + ret = PTR_ERR(ras_proc->ras_process_thread); + ras_proc->ras_process_thread = NULL; goto err; }