ASoC: Error out if we can't determine a suitable WM9081 sysclk

Due to the flexibility of the WM9081 FLL this should never happen
in a real system.

Reported-by: Jaswinder Singh Rajput <jaswinder@kernel.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/sound/soc/codecs/wm9081.c b/sound/soc/codecs/wm9081.c
index dbe20597d872..156f2a4a5930 100644
--- a/sound/soc/codecs/wm9081.c
+++ b/sound/soc/codecs/wm9081.c
@@ -707,6 +707,10 @@ static int configure_clock(struct snd_soc_codec *codec)
                                     target > 3000000)
                                         break;
                         }
+
+                        if (i == ARRAY_SIZE(clk_sys_rates))
+                                return -EINVAL;
+
                 } else if (wm9081->fs) {
                         for (i = 0; i < ARRAY_SIZE(clk_sys_rates); i++) {
                                 new_sysclk = clk_sys_rates[i].ratio
@@ -714,6 +718,10 @@ static int configure_clock(struct snd_soc_codec *codec)
                                 if (new_sysclk > 3000000)
                                         break;
                         }
+
+                        if (i == ARRAY_SIZE(clk_sys_rates))
+                                return -EINVAL;
+
                 } else {
                         new_sysclk = 12288000;
                 }