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| author |   Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2020-06-19 09:20:05 +0100 |
|---|---|---|
| committer |   Catalin Marinas <catalin.marinas@arm.com> | 2020-07-28 15:51:31 +0100 |
| commit | 3a3d208beede7ae03f8c80bed01f47d6b98d4ceb (patch) | |
| tree | 1991f2eee1971fa814a01a194fe93d7169166e2f /drivers/acpi/arm64 | |
| parent | ACPI/IORT: Make iort_msi_map_rid() PCI agnostic (diff) | |
| download | linux-dev-3a3d208beede7ae03f8c80bed01f47d6b98d4ceb.tar.xz linux-dev-3a3d208beede7ae03f8c80bed01f47d6b98d4ceb.zip | |
ACPI/IORT: Remove useless PCI bus walk
The PCI bus domain number (used in the iort_match_node_callback() -
pci_domain_nr() call) is cascaded through the PCI bus hierarchy at PCI
bus enumeration time, therefore there is no need in iort_find_dev_node()
to walk the PCI bus upwards to grab the root bus to be passed to
iort_scan_node(), the device->bus PCI bus pointer will do.
Remove this useless code.
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: Robin Murphy <robin.murphy@arm.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Link: https://lore.kernel.org/r/20200619082013.13661-5-lorenzo.pieralisi@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'drivers/acpi/arm64')
| -rw-r--r-- | drivers/acpi/arm64/iort.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index 53f9ef515089..421c6976ab81 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -558,10 +558,7 @@ static struct acpi_iort_node *iort_find_dev_node(struct device *dev) iort_match_node_callback, dev); } - /* Find a PCI root bus */ pbus = to_pci_dev(dev)->bus; - while (!pci_is_root_bus(pbus)) - pbus = pbus->parent; return iort_scan_node(ACPI_IORT_NODE_PCI_ROOT_COMPLEX, iort_match_node_callback, &pbus->dev); |