After restructuring and splitting the HDMI codec driver code, each
HDMI codec driver contains the own build_controls and build_pcms ops.
A copy-n-paste error put the wrong entries for nvhdmi-mcp driver; both
build_controls and build_pcms are swapped. Unfortunately both
callbacks have the very same form, and the compiler didn't complain
it, either. This resulted in a NULL dereference because the PCM
instance hasn't been initialized at calling the build_controls
callback.
Fix it by passing the proper entries.
Fixes: ad781b550f9a ("ALSA: hda/hdmi: Rewrite to new probe method")
Cc: <stable@vger.kernel.org>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=220743
Link: https://patch.msgid.link/20251106104647.25805-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
static const struct hda_codec_ops nvhdmi_mcp_codec_ops = {
.probe = nvhdmi_mcp_probe,
.remove = snd_hda_hdmi_simple_remove,
- .build_controls = nvhdmi_mcp_build_pcms,
- .build_pcms = nvhdmi_mcp_build_controls,
+ .build_pcms = nvhdmi_mcp_build_pcms,
+ .build_controls = nvhdmi_mcp_build_controls,
.init = nvhdmi_mcp_init,
.unsol_event = snd_hda_hdmi_simple_unsol_event,
};