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cpu/kinetis_common: fixed null ptr ref in gpio.c

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This commit is contained in:
Hauke Petersen 2016-02-09 16:22:25 +01:00
parent 5cac36d5b3
commit cfcf951b9d
1 changed files with 1 additions and 1 deletions
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2
cpu/kinetis_common/periph/gpio.c
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@ -326,12 +326,12 @@ void gpio_irq_enable(gpio_t dev)
mutex_lock(&int_config_lock); mutex_lock(&int_config_lock);
/* Search for the given pin in the port's interrupt configuration */ /* Search for the given pin in the port's interrupt configuration */
LL_SEARCH_SCALAR(gpio_interrupts[_port_num(dev)], entry, pin, pin_number); LL_SEARCH_SCALAR(gpio_interrupts[_port_num(dev)], entry, pin, pin_number);
uint32_t irqc = entry->irqc;
mutex_unlock(&int_config_lock); mutex_unlock(&int_config_lock);
if (entry == NULL) { if (entry == NULL) {
/* Pin has not been configured for interrupts */ /* Pin has not been configured for interrupts */
return; return;
} }
uint32_t irqc = entry->irqc;
port->PCR[pin_number] &= ~(PORT_PCR_IRQC_MASK); port->PCR[pin_number] &= ~(PORT_PCR_IRQC_MASK);
port->PCR[pin_number] |= irqc; port->PCR[pin_number] |= irqc;
} }