From: Sebastian Reichel Date: Fri, 30 Jun 2017 14:35:03 +0000 (+0200) Subject: mfd: da9052: Fix manual ADC read after timed out read X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=45f80a9f78f1bcf87c09ae120a68011efe35128a;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git mfd: da9052: Fix manual ADC read after timed out read It is possible that under heavy system load, the counter in the completion struct, used for waiting for end of AD conversion, gets incremented twice. To make sure the driver recovers from this situation, the completion struct should be reinitialized. Signed-off-by: Sebastian Reichel Signed-off-by: Lee Jones --- diff --git a/drivers/mfd/da9052-core.c b/drivers/mfd/da9052-core.c index a23a3a1c7061..433add43a0a9 100644 --- a/drivers/mfd/da9052-core.c +++ b/drivers/mfd/da9052-core.c @@ -387,6 +387,8 @@ int da9052_adc_manual_read(struct da9052 *da9052, unsigned char channel) mutex_lock(&da9052->auxadc_lock); + reinit_completion(&da9052->done); + /* Channel gets activated on enabling the Conversion bit */ mux_sel = chan_mux[channel] | DA9052_ADC_MAN_MAN_CONV;