[PATCH] vfio/platform: Replace spin_lock_irqsave by spin_lock in hard IRQ

[Tian Tao]

It is redundant to do irqsave and irqrestore in hardIRQ context.

Signed-off-by: Tian Tao <tiant...@hisilicon.com>
---
 drivers/vfio/platform/vfio_platform_irq.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/vfio/platform/vfio_platform_irq.c 
b/drivers/vfio/platform/vfio_platform_irq.c
index c5b09ec..24fd6c5 100644
--- a/drivers/vfio/platform/vfio_platform_irq.c
+++ b/drivers/vfio/platform/vfio_platform_irq.c
@@ -139,10 +139,9 @@ static int vfio_platform_set_irq_unmask(struct 
vfio_platform_device *vdev,
 static irqreturn_t vfio_automasked_irq_handler(int irq, void *dev_id)
 {
        struct vfio_platform_irq *irq_ctx = dev_id;
-       unsigned long flags;
        int ret = IRQ_NONE;
 
-       spin_lock_irqsave(&irq_ctx->lock, flags);
+       spin_lock(&irq_ctx->lock);
 
        if (!irq_ctx->masked) {
                ret = IRQ_HANDLED;
@@ -152,7 +151,7 @@ static irqreturn_t vfio_automasked_irq_handler(int irq, 
void *dev_id)
                irq_ctx->masked = true;
        }
 
-       spin_unlock_irqrestore(&irq_ctx->lock, flags);
+       spin_unlock(&irq_ctx->lock);
 
        if (ret == IRQ_HANDLED)
                eventfd_signal(irq_ctx->trigger, 1);
-- 
2.7.4