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m68k: apollo: Fix interrupt setup

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The user interrupt vector needs to be installed before the interrupts
are unmasked otherwise the timer tick isn't handled and boot up gets
stuck in calibrate_delay().

Assisted-by: Claude:claude-fable-5 # Wrote Apollo DN3000 emulator using QEMU
Fixes: 0aa78106c6 ("[PATCH] m68k: convert apollo irq code")
Signed-off-by: Daniel Palmer <daniel@0x0f.com>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://patch.msgid.link/20260828094940.3882602-1-daniel@0x0f.com
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
This commit is contained in:
Daniel Palmer 2026-08-28 18:49:40 +09:00 committed by Geert Uytterhoeven
parent cf83dfb2f2
commit 6cdbe63bad
1 changed files with 6 additions and 0 deletions
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6
arch/m68k/apollo/dn_ints.c
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@ -2,6 +2,7 @@
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <asm/irq.h>
#include <asm/traps.h>
#include <asm/apollohw.h>
@ -11,10 +12,13 @@ static unsigned int apollo_irq_startup(struct irq_data *data)
{
unsigned int irq = data->irq;
m68k_irq_startup(data);
if (irq < 8)
*(volatile unsigned char *)(pica+1) &= ~(1 << irq);
else
*(volatile unsigned char *)(picb+1) &= ~(1 << (irq - 8));
return 0;
}
@ -26,6 +30,8 @@ static void apollo_irq_shutdown(struct irq_data *data)
*(volatile unsigned char *)(pica+1) |= (1 << irq);
else
*(volatile unsigned char *)(picb+1) |= (1 << (irq - 8));
m68k_irq_shutdown(data);
}
static void apollo_irq_eoi(struct irq_data *data)