From c3a005f4b6a7752608e75d016ef8d07c55285e48 Mon Sep 17 00:00:00 2001 From: "Kevin D. Kissell" Date: Fri, 27 Jul 2007 18:45:25 +0100 Subject: [PATCH] [MIPS] SMTC: Safety net for i8259A interrupts. Signed-off-by: Ralf Baechle --- arch/mips/mips-boards/malta/malta_int.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/mips/mips-boards/malta/malta_int.c b/arch/mips/mips-boards/malta/malta_int.c index c78d48349600..97aeb8c4e601 100644 --- a/arch/mips/mips-boards/malta/malta_int.c +++ b/arch/mips/mips-boards/malta/malta_int.c @@ -330,6 +330,18 @@ void __init arch_init_irq(void) (0x100 << MIPSCPU_INT_I8259A)); setup_irq_smtc (MIPS_CPU_IRQ_BASE+MIPSCPU_INT_COREHI, &corehi_irqaction, (0x100 << MIPSCPU_INT_COREHI)); + /* + * Temporary hack to ensure that the subsidiary device + * interrupts coing in via the i8259A, but associated + * with low IRQ numbers, will restore the Status.IM + * value associated with the i8259A. + */ + { + int i; + + for (i = 0; i < 16; i++) + irq_hwmask[i] = (0x100 << MIPSCPU_INT_I8259A); + } #else /* Not SMTC */ setup_irq (MIPS_CPU_IRQ_BASE+MIPSCPU_INT_I8259A, &i8259irq); setup_irq (MIPS_CPU_IRQ_BASE+MIPSCPU_INT_COREHI, &corehi_irqaction); -- 2.11.0