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PCI: dwc: Remove root_bus pointer

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The pci_host_bridge struct already has a pointer to its pci_bus, so
let's convert the one user to use the bridge struct and remove the
private 'root_bus' pointer.

Link: https://lore.kernel.org/r/20200821035420.380495-18-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Jingoo Han <jingoohan1@gmail.com>
Cc: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Jonathan Hunter <jonathanh@nvidia.com>
Cc: linux-tegra@vger.kernel.org
This commit is contained in:
Rob Herring 2020-08-20 21:53:57 -06:00 committed by Lorenzo Pieralisi
parent 1df7930548
commit 5808d43e7c
3 changed files with 4 additions and 5 deletions
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4
drivers/pci/controller/dwc/pcie-designware-host.c
View File

@ -448,8 +448,8 @@ EXPORT_SYMBOL_GPL(dw_pcie_host_init);
void dw_pcie_host_deinit(struct pcie_port *pp)
{
pci_stop_root_bus(pp->root_bus);
pci_remove_root_bus(pp->root_bus);
pci_stop_root_bus(pp->bridge->bus);
pci_remove_root_bus(pp->bridge->bus);
if (pci_msi_enabled() && !pp->ops->msi_host_init)
dw_pcie_free_msi(pp);
}

1
drivers/pci/controller/dwc/pcie-designware.h
View File

@ -192,7 +192,6 @@ struct pcie_port {
struct irq_chip *msi_irq_chip;
u32 num_vectors;
u32 irq_mask[MAX_MSI_CTRLS];
struct pci_bus *root_bus;
struct pci_host_bridge *bridge;
raw_spinlock_t lock;
DECLARE_BITMAP(msi_irq_in_use, MAX_MSI_IRQS);

4
drivers/pci/controller/dwc/pcie-tegra194.c
View File

@ -1264,9 +1264,9 @@ static void tegra_pcie_downstream_dev_to_D0(struct tegra_pcie_dw *pcie)
* 5.2 Link State Power Management (Page #428).
*/
list_for_each_entry(child, &pp->root_bus->children, node) {
list_for_each_entry(child, &pp->bridge->bus->children, node) {
/* Bring downstream devices to D0 if they are not already in */
if (child->parent == pp->root_bus) {
if (child->parent == pp->bridge->bus) {
root_bus = child;
break;
}