diff options
| author | Ingo Molnar <mingo@kernel.org> | 2017-08-26 09:19:13 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-08-26 09:19:13 +0200 |
| commit | 413d63d71b222108d19703f3fd5cf9108652a730 (patch) | |
| tree | 4680de6aebb6430dc5f3d9327f86d65149e6b5ae /arch/arc/kernel/intc-compact.c | |
| parent | d6c8103b0265d8db30e20e948a4f06382bbdaea7 (diff) | |
| parent | 90a6cd503982bfd33ce8c70eb49bd2dd33bc6325 (diff) | |
Merge branch 'linus' into x86/mm to pick up fixes and to fix conflicts
Conflicts:
arch/x86/kernel/head64.c
arch/x86/mm/mmap.c
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arc/kernel/intc-compact.c')
| -rw-r--r-- | arch/arc/kernel/intc-compact.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/arch/arc/kernel/intc-compact.c b/arch/arc/kernel/intc-compact.c index 7e608c6b0a01..cef388025adf 100644 --- a/arch/arc/kernel/intc-compact.c +++ b/arch/arc/kernel/intc-compact.c @@ -27,7 +27,7 @@ */ void arc_init_IRQ(void) { - int level_mask = 0; + int level_mask = 0, i; /* Is timer high priority Interrupt (Level2 in ARCompact jargon) */ level_mask |= IS_ENABLED(CONFIG_ARC_COMPACT_IRQ_LEVELS) << TIMER0_IRQ; @@ -40,6 +40,18 @@ void arc_init_IRQ(void) if (level_mask) pr_info("Level-2 interrupts bitset %x\n", level_mask); + + /* + * Disable all IRQ lines so faulty external hardware won't + * trigger interrupt that kernel is not ready to handle. + */ + for (i = TIMER0_IRQ; i < NR_CPU_IRQS; i++) { + unsigned int ienb; + + ienb = read_aux_reg(AUX_IENABLE); + ienb &= ~(1 << i); + write_aux_reg(AUX_IENABLE, ienb); + } } /* |