[PATCH 3.3] mfd: Correct readability of WM8994 DC servo 4E register

[Mark Brown]

It should be marked as readable but wasn't, breaking DC servo operation.

Signed-off-by: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
---

This needs to go in for 3.3, it's a substantial regression.

 drivers/mfd/wm8994-regmap.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/mfd/wm8994-regmap.c b/drivers/mfd/wm8994-regmap.c
index 47743fa..ba383f6 100644
--- a/drivers/mfd/wm8994-regmap.c
+++ b/drivers/mfd/wm8994-regmap.c
@@ -806,6 +806,7 @@ static bool wm1811_readable_register(struct device *dev, unsigned int reg)
 	case WM8994_DC_SERVO_2:
 	case WM8994_DC_SERVO_READBACK:
 	case WM8994_DC_SERVO_4:
+	case WM8994_DC_SERVO_4E:
 	case WM8994_ANALOGUE_HP_1:
 	case WM8958_MIC_DETECT_1:
 	case WM8958_MIC_DETECT_2:
-- 
1.7.9.1

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