[PATCH 09/19] drm/amd/display: skip audio config for virtual signal

[Wayne Lin]

From: Alex Hung <alex.hung at amd.com>

[WHY & HOW]
IGT's kms_hdmi_inject (subtest inject_audio) triggers a warning message
from dce_aud_az_configure. This can be fixed by checking Virtual signal
that does not need to configure AZ audio since it does not have any.

Reviewed-by: Rodrigo Siqueira <rodrigo.siqueira at amd.com>
Acked-by: Wayne Lin <wayne.lin at amd.com>
Signed-off-by: Alex Hung <alex.hung at amd.com>
---
 drivers/gpu/drm/amd/display/dc/dce/dce_audio.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_audio.c b/drivers/gpu/drm/amd/display/dc/dce/dce_audio.c
index c94a966c6612..140598f18bbd 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_audio.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_audio.c
@@ -407,6 +407,10 @@ void dce_aud_az_configure(
 	bool is_ac3_supported = false;
 	union audio_sample_rates sample_rate;
 	uint32_t strlen = 0;
+
+	if (signal == SIGNAL_TYPE_VIRTUAL)
+		return;
+
 	value = AZ_REG_READ(AZALIA_F0_CODEC_PIN_CONTROL_HOT_PLUG_CONTROL);
 	set_reg_field_value(value, 1,
 			AZALIA_F0_CODEC_PIN_CONTROL_HOT_PLUG_CONTROL,
-- 
2.37.3