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ASoC: tpa6130a2: Fix unbalanced regulator disables

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This driver has unbalanced regulator_disable when doing module loading and
unloading. This is because tpa6130a2_probe followed by tpa6130a2_remove
calls twice tpa6130a2_power(0). Fix this by implementing a state checking
in tpa6130a2_power.

Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Cc: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
This commit is contained in:
Jarkko Nikula 2010-10-28 14:05:40 +03:00 committed by Liam Girdwood
parent 1bc13b2e35
commit 63f7526f26
1 changed files with 2 additions and 2 deletions
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4
sound/soc/codecs/tpa6130a2.c
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@ -125,7 +125,7 @@ static int tpa6130a2_power(int power)
data = i2c_get_clientdata(tpa6130a2_client);
mutex_lock(&data->mutex);
if (power) {
if (power && !data->power_state) {
/* Power on */
if (data->power_gpio >= 0)
gpio_set_value(data->power_gpio, 1);
@ -153,7 +153,7 @@ static int tpa6130a2_power(int power)
val = tpa6130a2_read(TPA6130A2_REG_CONTROL);
val &= ~TPA6130A2_SWS;
tpa6130a2_i2c_write(TPA6130A2_REG_CONTROL, val);
} else {
} else if (!power && data->power_state) {
/* set SWS */
val = tpa6130a2_read(TPA6130A2_REG_CONTROL);
val |= TPA6130A2_SWS;