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    SubjectRe: [PATCH v5 08/14] ACPI: ARM64: IORT: rework iort_node_get_id()
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    On 2016/12/22 13:35, Hanjun Guo wrote:
    > From: Hanjun Guo <hanjun.guo@linaro.org>
    >
    > iort_node_get_id() has two output, one is the mapped ids,
    > the other is the referenced parent node which is returned
    > from the function.
    >
    > For now we need a API just return its parent node for
    > single mapping, so just update this function slightly then
    > reuse it later.
    >
    > Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
    > Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
    > Cc: Marc Zyngier <marc.zyngier@arm.com>
    > ---
    > drivers/acpi/arm64/iort.c | 3 ++-
    > 1 file changed, 2 insertions(+), 1 deletion(-)
    >
    > diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c
    > index ab7bae7..bc68d93 100644
    > --- a/drivers/acpi/arm64/iort.c
    > +++ b/drivers/acpi/arm64/iort.c
    > @@ -347,7 +347,8 @@ struct acpi_iort_node *iort_node_get_id(struct acpi_iort_node *node,
    > if (map[index].flags & ACPI_IORT_ID_SINGLE_MAPPING) {
    > if (node->type == ACPI_IORT_NODE_NAMED_COMPONENT ||
    > node->type == ACPI_IORT_NODE_PCI_ROOT_COMPLEX) {
    > - *id_out = map[index].output_base;
    > + if (id_out)
    > + *id_out = map[index].output_base;
    > return parent;
    > }
    > }
    Tested-by: Xinwei Kong <kong.kongxinwei@hisilicon.com>

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