On Tue, 2019-06-18 at 13:00 +0200, Amadeusz Sławiński wrote: > On Mon, 17 Jun 2019 13:51:42 -0700 > Ranjani Sridharan <ranjani.sridha...@linux.intel.com> wrote: > > > On Mon, 2019-06-17 at 13:36 +0200, Amadeusz Sławiński wrote: > > > When we unload Skylake driver we may end up calling > > > hdac_component_master_unbind(), it uses acomp->audio_ops, which > > > we > > > set > > > in hdmi_codec_probe(), so we need to set it to NULL in > > > hdmi_codec_remove(), > > > otherwise we will dereference no longer existing pointer. > > > > Hi Amadeusz, > > > > It looks like the audio_ops should be deleted > > snd_hdac_acomp_exit(). > > Also, this doesnt seem to be the case with when the SOF driver is > > removed. > > Could you please give a bit more context on what error you see when > > this happens? > > Hi, > > I get Oops. This is what happens with all other patches in this > series and only this one reverted: > > root@APL:~# rmmod snd_soc_sst_bxt_rt298 > root@APL:~# rmmod snd_soc_hdac_hdmi > root@APL:~# rmmod snd_soc_skl
Thanks, Amadeusz. I think the order in which the drivers are removed is what's causing the oops in your case. With SOF, the order we remove is 1. rmmod sof_pci_dev 2. rmmod snd_soc_sst_bxt_rt298 3. rmmod snd_soc_hdac_hdmi Thanks, Ranjani
