diff options
| -rw-r--r-- | arch/arm/common/gic.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/common/gic.c b/arch/arm/common/gic.c index d108cc4e542..7fa82240d08 100644 --- a/arch/arm/common/gic.c +++ b/arch/arm/common/gic.c @@ -590,6 +590,14 @@ static void gic_cpu_save(unsigned int gic_nr) for (i = 0; i < DIV_ROUND_UP(32, 16); i++) ptr[i] = readl_relaxed(dist_base + GIC_DIST_CONFIG + i * 4); + /* + * Disable GIC CPU IF and IRQ bybass. When a CPU is shutdown we must + * insure that it does not exit wfi if an IRQ is pending on the IF. + * The GIC allows this operation by disabling the GIC CPU IF and the + * IRQ bypass mode. The raw IRQ line is still delivered to the power + * controller that use the IRQ to wake up the respective core. + */ + writel_relaxed(0x1e0, cpu_base + GIC_CPU_CTRL); } static void gic_cpu_restore(unsigned int gic_nr) |