[PATCH 1/5] iommu/rockchip: fix devm_request_irq and devm_free_irq parameter

[Shunqian Zheng]

From: Simon <x...@rock-chips.com>

When rk_iommu_attach_device or rk_iommu_detach_device be called, the second
parameter "dev" represent the device who own the iommu, so it is not resonable
using "dev" for devm_request_irq's first parameter. To avoid potential error,
we must use iommu device itself "iommu->dev" instead, the same as devm_free_irq.

Signed-off-by: Simon <x...@rock-chips.com>
---
 drivers/iommu/rockchip-iommu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c
index c7d6156..ec0ce62 100644
--- a/drivers/iommu/rockchip-iommu.c
+++ b/drivers/iommu/rockchip-iommu.c
@@ -807,7 +807,7 @@ static int rk_iommu_attach_device(struct iommu_domain 
*domain,
 
        iommu->domain = domain;
 
-       ret = devm_request_irq(dev, iommu->irq, rk_iommu_irq,
+       ret = devm_request_irq(iommu->dev, iommu->irq, rk_iommu_irq,
                               IRQF_SHARED, dev_name(dev), iommu);
        if (ret)
                return ret;
@@ -860,7 +860,7 @@ static void rk_iommu_detach_device(struct iommu_domain 
*domain,
        }
        rk_iommu_disable_stall(iommu);
 
-       devm_free_irq(dev, iommu->irq, iommu);
+       devm_free_irq(iommu->dev, iommu->irq, iommu);
 
        iommu->domain = NULL;
 
-- 
1.9.1