1 files changed, 5 insertions, 0 deletions

diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
index eefa2427b102..cdfbfb633f30 100644
--- a/sound/soc/codecs/wm8994.c
+++ b/sound/soc/codecs/wm8994.c
@@ -2853,6 +2853,11 @@ static int wm8994_set_fll(struct snd_soc_dai *dai, int id, int src,
         }
 
         switch (src) {
+        case 0:
+                /* Allow no source specification when stopping */
+                if (freq_out)
+                        return -EINVAL;
+                break;
         case WM8994_FLL_SRC_MCLK1:
         case WM8994_FLL_SRC_MCLK2:
         case WM8994_FLL_SRC_LRCLK: