On 06-04-21, 09:01, Bard Liao wrote: > intel_link_probe() could return error and dev_get_drvdata() will return > null in such case. So we have to test link->cdns after > link->cdns = dev_get_drvdata(&ldev->auxdev.dev); > Otherwise, we will meet the "kernel NULL pointer dereference" error. Applied, thanks -- ~Vinod