[rtems commit] bsp/lpc32xx: bsp_interrupt_vector_enable()
Sebastian Huber
sebh at rtems.org
Wed Jun 8 08:20:05 UTC 2022
Module: rtems
Branch: master
Commit: 8d6190129a1fe56289ea9c8c9a9f0b67b1b6be82
Changeset: http://git.rtems.org/rtems/commit/?id=8d6190129a1fe56289ea9c8c9a9f0b67b1b6be82
Author: Sebastian Huber <sebastian.huber at embedded-brains.de>
Date: Tue Jun 7 15:45:04 2022 +0200
bsp/lpc32xx: bsp_interrupt_vector_enable()
The interrupt enables are used to implement a priority scheme in
bsp_interrupt_dispatch(). Enable interrupts through
bsp_interrupt_vector_enable() only if they are not already enabled to
not interfere with the priority scheme while
bsp_interrupt_vector_enable() is called during interrupt dispatching.
---
bsps/arm/lpc32xx/irq/irq.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/bsps/arm/lpc32xx/irq/irq.c b/bsps/arm/lpc32xx/irq/irq.c
index a62eee6dd5..2b047be559 100644
--- a/bsps/arm/lpc32xx/irq/irq.c
+++ b/bsps/arm/lpc32xx/irq/irq.c
@@ -334,8 +334,12 @@ rtems_status_code bsp_interrupt_vector_enable(rtems_vector_number vector)
bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector));
rtems_interrupt_disable(level);
- lpc32xx_irq_set_bit_in_register(vector, LPC32XX_IRQ_OFFSET_ER);
- lpc32xx_irq_set_bit_in_field(vector, &lpc32xx_irq_enable);
+
+ if (!lpc32xx_irq_is_bit_set_in_field(vector, &lpc32xx_irq_enable)) {
+ lpc32xx_irq_set_bit_in_field(vector, &lpc32xx_irq_enable);
+ lpc32xx_irq_set_bit_in_register(vector, LPC32XX_IRQ_OFFSET_ER);
+ }
+
rtems_interrupt_enable(level);
return RTEMS_SUCCESSFUL;
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