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drm/i915: Check num_pipes before initializing audio component

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when num_pipes is zero, it indicates there is no display and HDMI
audio doesn't exist.

v2: Move the check from caller to callee for consistency.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Signed-off-by: Elaine Wang <elaine.wang@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1482142746-21663-1-git-send-email-elaine.wang@intel.com
This commit is contained in:
Elaine Wang 2016-12-19 18:19:05 +08:00 committed by Jani Nikula
parent 093d680a48
commit 108109444f
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/i915/intel_audio.c
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@ -928,6 +928,9 @@ void i915_audio_component_init(struct drm_i915_private *dev_priv)
{
int ret;
if (INTEL_INFO(dev_priv)->num_pipes == 0)
return;
ret = component_add(dev_priv->drm.dev, &i915_audio_component_bind_ops);
if (ret < 0) {
DRM_ERROR("failed to add audio component (%d)\n", ret);