4.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Alex Deucher <alexander.deuc...@amd.com>

commit d73a824acc705571c0f47596326d7967fba9a1d9 upstream.

bug: https://bugzilla.kernel.org/show_bug.cgi?id=97701

Reported-by: Mikael Pettersson <mikpeli...@gmail.com>
Tested-by: Mikael Pettersson <mikpeli...@gmail.com>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/gpu/drm/radeon/radeon_audio.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/drivers/gpu/drm/radeon/radeon_audio.c
+++ b/drivers/gpu/drm/radeon/radeon_audio.c
@@ -464,6 +464,10 @@ void radeon_audio_detect(struct drm_conn
                return;
 
        rdev = connector->encoder->dev->dev_private;
+
+       if (!radeon_audio_chipset_supported(rdev))
+               return;
+
        radeon_encoder = to_radeon_encoder(connector->encoder);
        dig = radeon_encoder->enc_priv;
 


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