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ALSA: hda/hdmi: Fix breakage at probing nvhdmi-mcp driver

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commit 82420bd4e1 upstream.

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: ad781b550f ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Takashi Iwai
2025-11-06 11:46:45 +01:00
committed by Greg Kroah-Hartman
parent a54ba4afb3
commit d2aed6fac1
1 changed files with 2 additions and 2 deletions
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4
sound/hda/codecs/hdmi/nvhdmi-mcp.c
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@@ -351,8 +351,8 @@ static int nvhdmi_mcp_probe(struct hda_codec *codec,
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,
};