ASoC: Bail out of wm_hubs DC servo if calibration fails

We're keeping track of the number of times we've iterated but never
actually using this to bail out if the chip looks stuck.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>

diff --git a/sound/soc/codecs/wm_hubs.c b/sound/soc/codecs/wm_hubs.c
index 0ad9f5d..486bdd2 100644 (file)
--- a/sound/soc/codecs/wm_hubs.c
+++ b/sound/soc/codecs/wm_hubs.c
@@ -74,7 +74,7 @@ static void wait_for_dc_servo(struct snd_soc_codec *codec)
                msleep(1);
                reg = snd_soc_read(codec, WM8993_DC_SERVO_READBACK_0);
                dev_dbg(codec->dev, "DC servo: %x\n", reg);
-       } while (reg & WM8993_DCS_DATAPATH_BUSY);
+       } while (reg & WM8993_DCS_DATAPATH_BUSY && count < 400);
 
        if (reg & WM8993_DCS_DATAPATH_BUSY)
                dev_err(codec->dev, "Timed out waiting for DC Servo\n");