[PATCH] Iommu: ipmmu-vmsa: replace spin_lock_irqsave with spin_lock in ISR

From: jun qian
Date: Tue Sep 11 2018 - 11:00:36 EST


As you are already in ISR, it is unnecessary to call spin_lock_irqsave.

Signed-off-by: jun qian <hangdianqj@xxxxxxx>
---
drivers/iommu/ipmmu-vmsa.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c
index 22b94f8a9a04..afa23d53502c 100644
--- a/drivers/iommu/ipmmu-vmsa.c
+++ b/drivers/iommu/ipmmu-vmsa.c
@@ -569,9 +569,8 @@ static irqreturn_t ipmmu_irq(int irq, void *dev)
struct ipmmu_vmsa_device *mmu = dev;
irqreturn_t status = IRQ_NONE;
unsigned int i;
- unsigned long flags;

- spin_lock_irqsave(&mmu->lock, flags);
+ spin_lock(&mmu->lock);

/*
* Check interrupts for all active contexts.
@@ -583,7 +582,7 @@ static irqreturn_t ipmmu_irq(int irq, void *dev)
status = IRQ_HANDLED;
}

- spin_unlock_irqrestore(&mmu->lock, flags);
+ spin_unlock(&mmu->lock);

return status;
}
--
2.17.1