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From: Joerg Roedel <joro@8bytes.org>
To: iommu@lists.linux-foundation.org
Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-mediatek@lists.infradead.org, guohanjun@huawei.com,
Sudeep Holla <sudeep.holla@arm.com>,
Rob Clark <robdclark@gmail.com>, Sean Paul <sean@poorly.run>,
Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Joerg Roedel <joro@8bytes.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Thierry Reding <thierry.reding@gmail.com>,
Jean-Philippe Brucker <jean-philippe@linaro.org>,
Andy Gross <agross@kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Joerg Roedel <jroedel@suse.de>
Subject: [PATCH v3 07/15] iommu/arm-smmu: Fix uninitilized variable warning
Date: Fri, 20 Mar 2020 10:14:06 +0100 [thread overview]
Message-ID: <20200320091414.3941-8-joro@8bytes.org> (raw)
In-Reply-To: <20200320091414.3941-1-joro@8bytes.org>
From: Joerg Roedel <jroedel@suse.de>
Some unrelated changes in the iommu code caused a new warning to
appear in the arm-smmu driver:
CC drivers/iommu/arm-smmu.o
drivers/iommu/arm-smmu.c: In function 'arm_smmu_add_device':
drivers/iommu/arm-smmu.c:1441:2: warning: 'smmu' may be used uninitialized in this function [-Wmaybe-uninitialized]
arm_smmu_rpm_put(smmu);
^~~~~~~~~~~~~~~~~~~~~~
The warning is a false positive, but initialize the variable to NULL
to get rid of it.
Tested-by: Will Deacon <will@kernel.org> # arm-smmu
Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
drivers/iommu/arm-smmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 16c4b87af42b..980aae73b45b 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -1383,7 +1383,7 @@ struct arm_smmu_device *arm_smmu_get_by_fwnode(struct fwnode_handle *fwnode)
static int arm_smmu_add_device(struct device *dev)
{
- struct arm_smmu_device *smmu;
+ struct arm_smmu_device *smmu = NULL;
struct arm_smmu_master_cfg *cfg;
struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
int i, ret;
--
2.17.1
next prev parent reply other threads:[~2020-03-20 9:14 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-20 9:13 [PATCH v3 00/15] iommu: Move iommu_fwspec out of 'struct device' Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 01/15] iommu: Define dev_iommu_fwspec_get() for !CONFIG_IOMMU_API Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 02/15] ACPI/IORT: Remove direct access of dev->iommu_fwspec Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 03/15] drm/msm/mdp5: " Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 04/15] iommu/tegra-gart: " Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 05/15] iommu: Rename struct iommu_param to dev_iommu Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 06/15] iommu: Move iommu_fwspec to struct dev_iommu Joerg Roedel
2020-03-20 9:14 ` Joerg Roedel [this message]
2020-03-20 9:14 ` [PATCH v3 08/15] iommu: Introduce accessors for iommu private data Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 09/15] iommu/arm-smmu-v3: Use accessor functions " Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 10/15] iommu/arm-smmu: " Joerg Roedel
2020-03-23 16:02 ` Robin Murphy
2020-03-24 10:08 ` Joerg Roedel
2020-03-25 12:31 ` Robin Murphy
2020-03-26 15:08 ` Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 11/15] iommu/renesas: " Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 12/15] iommu/mediatek: " Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 13/15] iommu/qcom: " Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 14/15] iommu/virtio: " Joerg Roedel
2020-03-20 9:14 ` [PATCH v3 15/15] iommu: Move fwspec->iommu_priv to struct dev_iommu Joerg Roedel
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