| Message ID | 20190722161433.23027-1-lorenzo.pieralisi@arm.com (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
| Series | ACPI/IORT: Rename arm_smmu_v3_set_proximity() 'node' local variable | expand |
On 2019/7/23 0:14, Lorenzo Pieralisi wrote: > Commit 36a2ba07757d ("ACPI/IORT: Reject platform device creation on NUMA > node mapping failure") introduced a local variable 'node' in > arm_smmu_v3_set_proximity() that shadows the struct acpi_iort_node > pointer function parameter. > > Execution was unaffected but it is prone to errors and can lead > to subtle bugs. > > Rename the local variable to prevent any issue. > > Reported-by: Will Deacon <will@kernel.org> > Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> > Cc: Will Deacon <will@kernel.org> > Cc: Hanjun Guo <guohanjun@huawei.com> > Cc: Sudeep Holla <sudeep.holla@arm.com> > Cc: Catalin Marinas <catalin.marinas@arm.com> > Cc: Robin Murphy <robin.murphy@arm.com> > Cc: Kefeng Wang <wangkefeng.wang@huawei.com> > --- > drivers/acpi/arm64/iort.c | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) Reviewed-by: Hanjun Guo <guohanjun@huawei.com>
diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index d4551e33fa71..15dbfd657d82 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -1256,12 +1256,12 @@ static int __init arm_smmu_v3_set_proximity(struct device *dev, smmu = (struct acpi_iort_smmu_v3 *)node->node_data; if (smmu->flags & ACPI_IORT_SMMU_V3_PXM_VALID) { - int node = acpi_map_pxm_to_node(smmu->pxm); + int dev_node = acpi_map_pxm_to_node(smmu->pxm); - if (node != NUMA_NO_NODE && !node_online(node)) + if (dev_node != NUMA_NO_NODE && !node_online(dev_node)) return -EINVAL; - set_dev_node(dev, node); + set_dev_node(dev, dev_node); pr_info("SMMU-v3[%llx] Mapped to Proximity domain %d\n", smmu->base_address, smmu->pxm);
Commit 36a2ba07757d ("ACPI/IORT: Reject platform device creation on NUMA node mapping failure") introduced a local variable 'node' in arm_smmu_v3_set_proximity() that shadows the struct acpi_iort_node pointer function parameter. Execution was unaffected but it is prone to errors and can lead to subtle bugs. Rename the local variable to prevent any issue. Reported-by: Will Deacon <will@kernel.org> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Hanjun Guo <guohanjun@huawei.com> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> --- drivers/acpi/arm64/iort.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)