When CONFIG_SND_JACK is disabled, the hdmi driver tries to create a new output jack structure and dereferences it even though the pointer is never assigned:
sound/pci/hda/patch_hdmi.c: In function 'generic_hdmi_build_jack': sound/pci/hda/patch_hdmi.c:2534:30: error: 'jack' may be used uninitialized in this function [-Werror=maybe-uninitialized] sound/pci/hda/patch_hdmi.c:2526:19: note: 'jack' was declared here This uses a compile-time check to avoid calling a nonworking snd_jack_new() function, and sets an explicit NULL pointer instead. Signed-off-by: Arnd Bergmann <[email protected]> Fixes: 788d441a164c ("ALSA: hda - Use component ops for i915 HDMI/DP audio jack handling") --- sound/pci/hda/patch_hdmi.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index f4443b5fbf6e..c0872ad80aa0 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -2526,6 +2526,11 @@ static int add_hdmi_jack_kctl(struct hda_codec *codec, struct snd_jack *jack; int err; + if (!IS_ENABLED(CONFIG_SND_JACK)) { + spec->pcm_rec[pcm_idx].jack = NULL; + return 0; + } + err = snd_jack_new(codec->card, name, SND_JACK_AVOUT, &jack, true, false); if (err < 0) -- 2.7.0
