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Merge branch 'bugfix/can_critical_section_compliance_backport_v3.3' into 'release/v3.3'

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CAN: Fix critical section compliance (backport v3.3)

See merge request espressif/esp-idf!6567
This commit is contained in:
Angus Gratton 2019-11-08 16:52:33 +08:00
commit 2aa255c875
1 changed files with 6 additions and 4 deletions
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10
components/driver/can.c
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@ -151,8 +151,10 @@ typedef struct {
static can_obj_t *p_can_obj = NULL;
static portMUX_TYPE can_spinlock = portMUX_INITIALIZER_UNLOCKED;
#define CAN_ENTER_CRITICAL() portENTER_CRITICAL(&can_spinlock)
#define CAN_EXIT_CRITICAL() portEXIT_CRITICAL(&can_spinlock)
#define CAN_ENTER_CRITICAL_ISR() portENTER_CRITICAL_ISR(&can_spinlock)
#define CAN_EXIT_CRITICAL_ISR() portEXIT_CRITICAL_ISR(&can_spinlock)
#define CAN_ENTER_CRITICAL() portENTER_CRITICAL(&can_spinlock)
#define CAN_EXIT_CRITICAL() portEXIT_CRITICAL(&can_spinlock)
/* ------------------- Configuration Register Functions---------------------- */
@ -494,7 +496,7 @@ static void can_intr_handler_main(void *arg)
can_status_reg_t status;
can_intr_reg_t intr_reason;
CAN_ENTER_CRITICAL();
CAN_ENTER_CRITICAL_ISR();
status.val = can_get_status();
intr_reason.val = (p_can_obj != NULL) ? can_get_interrupt_reason() : 0; //Incase intr occurs whilst driver is being uninstalled
@ -529,7 +531,7 @@ static void can_intr_handler_main(void *arg)
}
/* Todo: Check possible bug where transmitting self reception request then
clearing rx buffer will cancel the transmission. */
CAN_EXIT_CRITICAL();
CAN_EXIT_CRITICAL_ISR();
if (p_can_obj->alert_semphr != NULL && alert_req) {
//Give semaphore if alerts were triggered