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-rw-r--r--arch/powerpc/sysdev/mpic.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index 3981ae4cb58e..30c44e6b0413 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -230,14 +230,16 @@ static inline u32 _mpic_irq_read(struct mpic *mpic, unsigned int src_no, unsigne
{
unsigned int isu = src_no >> mpic->isu_shift;
unsigned int idx = src_no & mpic->isu_mask;
+ unsigned int val;
+ val = _mpic_read(mpic->reg_type, &mpic->isus[isu],
+ reg + (idx * MPIC_INFO(IRQ_STRIDE)));
#ifdef CONFIG_MPIC_BROKEN_REGREAD
if (reg == 0)
- return mpic->isu_reg0_shadow[idx];
- else
+ val = (val & (MPIC_VECPRI_MASK | MPIC_VECPRI_ACTIVITY)) |
+ mpic->isu_reg0_shadow[src_no];
#endif
- return _mpic_read(mpic->reg_type, &mpic->isus[isu],
- reg + (idx * MPIC_INFO(IRQ_STRIDE)));
+ return val;
}
static inline void _mpic_irq_write(struct mpic *mpic, unsigned int src_no,
@@ -251,7 +253,8 @@ static inline void _mpic_irq_write(struct mpic *mpic, unsigned int src_no,
#ifdef CONFIG_MPIC_BROKEN_REGREAD
if (reg == 0)
- mpic->isu_reg0_shadow[idx] = value;
+ mpic->isu_reg0_shadow[src_no] =
+ value & ~(MPIC_VECPRI_MASK | MPIC_VECPRI_ACTIVITY);
#endif
}