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authorJoerg Roedel <jroedel@suse.de>2020-03-26 16:08:32 +0100
committerJoerg Roedel <jroedel@suse.de>2020-03-27 11:14:51 +0100
commit0b242ebbb7fca818323d02d2bbb08ff7d425f594 (patch)
treeddf497c7676197ef96eee927eb3a2f3689feecbc /drivers/iommu
parent72acd9df18f12420001f901493c54b7364f34d60 (diff)
downloadlinux-0b242ebbb7fca818323d02d2bbb08ff7d425f594.tar.bz2
iommu/arm-smmu: Fix uninitilized variable warning
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. Signed-off-by: Joerg Roedel <jroedel@suse.de> Tested-by: Will Deacon <will@kernel.org> # arm-smmu Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org> Link: https://lore.kernel.org/r/20200326150841.10083-8-joro@8bytes.org
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/arm-smmu.c2
1 files changed, 1 insertions, 1 deletions
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;