diff options
Diffstat (limited to 'arch/mips/oprofile/op_model_loongson2.c')
| -rw-r--r-- | arch/mips/oprofile/op_model_loongson2.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/mips/oprofile/op_model_loongson2.c b/arch/mips/oprofile/op_model_loongson2.c index 575cd147347..475ff46712a 100644 --- a/arch/mips/oprofile/op_model_loongson2.c +++ b/arch/mips/oprofile/op_model_loongson2.c @@ -1,7 +1,7 @@ /* * Loongson2 performance counter driver for oprofile * - * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology + * Copyright (C) 2009 Lemote Inc. * Author: Yanhua <yanh@lemote.com> * Author: Wu Zhangjin <wuzj@lemote.com> * @@ -125,6 +125,9 @@ static irqreturn_t loongson2_perfcount_handler(int irq, void *dev_id) */ /* Check whether the irq belongs to me */ + enabled = read_c0_perfcnt() & LOONGSON2_PERFCNT_INT_EN; + if (!enabled) + return IRQ_NONE; enabled = reg.cnt1_enabled | reg.cnt2_enabled; if (!enabled) return IRQ_NONE; |