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Disable interrupts while accessing the APB2RTSR register

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4212 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2011-12-22 03:09:25 +00:00
parent a9a0e45ee1
commit 60f0ba5fcb
1 changed files with 8 additions and 0 deletions
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8
arch/arm/src/stm32/stm32_adc.c
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@ -823,6 +823,7 @@ static void adc_startconv(struct stm32_dev_s *priv, bool enable)
static void adc_rccreset(struct stm32_dev_s *priv, bool reset)
{
irqstate_t flags;
uint32_t regval;
uint32_t adcbit;
@ -860,6 +861,12 @@ static void adc_rccreset(struct stm32_dev_s *priv, bool reset)
adcbit = RCC_APB2RSTR_ADCRST;
#endif
/* Disable interrupts. This is necessary because the APB2RTSR register
* is used by several different drivers.
*/
flags = irqsave();
/* Set or clear the selected bit in the APB2 reset register */
regval = getreg32(STM32_RCC_APB2RSTR);
@ -876,6 +883,7 @@ static void adc_rccreset(struct stm32_dev_s *priv, bool reset)
regval &= ~adcbit;
}
putreg32(regval, STM32_RCC_APB2RSTR);
irqrestore(flags);
}
/*******************************************************************************