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From 594abebdffdcff606bc445f2661d9a504f180136 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Mon, 11 Dec 2017 09:18:32 +0000
Subject: [PATCH] ARM: Activate FIQs to avoid __irq_startup warnings
There is a new test in __irq_startup that the IRQ is activated, which
hasn't been the case for FIQs since they bypass some of the usual setup.
Augment enable_fiq to include a call to irq_activate to avoid the
warning.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
arch/arm/kernel/fiq.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/arch/arm/kernel/fiq.c
+++ b/arch/arm/kernel/fiq.c
@@ -56,6 +56,8 @@
static unsigned long dfl_fiq_insn;
static struct pt_regs dfl_fiq_regs;
+extern int irq_activate(struct irq_desc *desc);
+
/* Default reacquire function
* - we always relinquish FIQ control
* - we always reacquire FIQ control
@@ -140,6 +142,8 @@ static int fiq_start;
void enable_fiq(int fiq)
{
+ struct irq_desc *desc = irq_to_desc(fiq + fiq_start);
+ irq_activate(desc);
enable_irq(fiq + fiq_start);
}
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