[Intel-gfx] [PATCH 1/2] drm/i915: Check num_pipes before initializing audio component

[Wang Elaine]

From: Elaine Wang <elaine.wang at intel.com>

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

Cc: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
Signed-off-by: Elaine Wang <elaine.wang at intel.com>
---
 drivers/gpu/drm/i915/i915_drv.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 6428588..c94e26d 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -1132,7 +1132,8 @@ static void i915_driver_register(struct drm_i915_private *dev_priv)
 	if (IS_GEN5(dev_priv))
 		intel_gpu_ips_init(dev_priv);
 
-	i915_audio_component_init(dev_priv);
+	if (INTEL_INFO(dev_priv)->num_pipes)
+		i915_audio_component_init(dev_priv);
 
 	/*
 	 * Some ports require correctly set-up hpd registers for detection to
-- 
1.9.1