2021-04-08 20:18:48

by Krzysztof Kozlowski

Subject: [PATCH] iommu: exynos: remove unneeded local variable initialization

The initialization of 'fault_addr' local variable is not needed as it is
shortly after overwritten.

Addresses-Coverity: Unused value
Signed-off-by: Krzysztof Kozlowski <[email protected]>
---
drivers/iommu/exynos-iommu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index de324b4eedfe..8fa9a591fb96 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -407,7 +407,7 @@ static irqreturn_t exynos_sysmmu_irq(int irq, void *dev_id)
struct sysmmu_drvdata *data = dev_id;
const struct sysmmu_fault_info *finfo;
unsigned int i, n, itype;
- sysmmu_iova_t fault_addr = -1;
+ sysmmu_iova_t fault_addr;
unsigned short reg_status, reg_clear;
int ret = -ENOSYS;

--
2.25.1

2021-04-09 12:21:33

by Marek Szyprowski

Subject: Re: [PATCH] iommu: exynos: remove unneeded local variable initialization

On 08.04.2021 22:16, Krzysztof Kozlowski wrote:
> The initialization of 'fault_addr' local variable is not needed as it is
> shortly after overwritten.
>
> Addresses-Coverity: Unused value
> Signed-off-by: Krzysztof Kozlowski <[email protected]>

Acked-by: Marek Szyprowski <[email protected]>

> ---
> drivers/iommu/exynos-iommu.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
> index de324b4eedfe..8fa9a591fb96 100644
> --- a/drivers/iommu/exynos-iommu.c
> +++ b/drivers/iommu/exynos-iommu.c
> @@ -407,7 +407,7 @@ static irqreturn_t exynos_sysmmu_irq(int irq, void *dev_id)
> struct sysmmu_drvdata *data = dev_id;
> const struct sysmmu_fault_info *finfo;
> unsigned int i, n, itype;
> - sysmmu_iova_t fault_addr = -1;
> + sysmmu_iova_t fault_addr;
> unsigned short reg_status, reg_clear;
> int ret = -ENOSYS;
>

Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland

2021-04-15 13:37:35

by Joerg Roedel

Subject: Re: [PATCH] iommu: exynos: remove unneeded local variable initialization

On Thu, Apr 08, 2021 at 10:16:22PM +0200, Krzysztof Kozlowski wrote:
> drivers/iommu/exynos-iommu.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)

Applied, thanks.