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mfd: Cache wm8994 chip revision

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There's no need to mark the chip revision registers as volatile, it won't
change at runtime so we can cache it from the device at startup.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Mark Brown 2012-04-05 15:16:56 +01:00 committed by Samuel Ortiz
parent 38a36f5a6a
commit 18996db262
1 changed files with 0 additions and 1 deletions
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drivers/mfd/wm8994-regmap.c
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@ -1122,7 +1122,6 @@ static bool wm8994_volatile_register(struct device *dev, unsigned int reg)
case WM8994_RATE_STATUS:
case WM8958_MIC_DETECT_3:
case WM8994_DC_SERVO_4E:
case WM8994_CHIP_REVISION:
case WM8994_INTERRUPT_STATUS_1:
case WM8994_INTERRUPT_STATUS_2:
return true;