From 53dc0b0c94907db53444ba485f8ae95111b0d6fd Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Tue, 3 Dec 2013 17:45:14 -0500
Subject: [PATCH] drm/radeon: fix null pointer dereference in dce6+ audio code

Don't crash if the encoder does not have an afmt struct.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=72283

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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