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ALSA - hda: hdmi check NULL pointer in hdmi_set_chmap
Make sure per_pin is not NULL before using it.
Fixes: 9b3dc8aa3f
('ALSA: hda - Register chmap obj as priv data instead of codec')
Signed-off-by: Libin Yang <libin.yang@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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1 changed files with 2 additions and 0 deletions
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@ -1858,6 +1858,8 @@ static void hdmi_set_chmap(struct hdac_device *hdac, int pcm_idx,
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struct hdmi_spec *spec = codec->spec;
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struct hdmi_spec_per_pin *per_pin = pcm_idx_to_pin(spec, pcm_idx);
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if (!per_pin)
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return;
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mutex_lock(&per_pin->lock);
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per_pin->chmap_set = true;
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memcpy(per_pin->chmap, chmap, ARRAY_SIZE(per_pin->chmap));
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