diff options
Diffstat (limited to 'drivers/pci/controller')
| -rw-r--r-- | drivers/pci/controller/pci-tegra.c | 17 | ||||
| -rw-r--r-- | drivers/pci/controller/pcie-mediatek.c | 10 |
2 files changed, 18 insertions, 9 deletions
diff --git a/drivers/pci/controller/pci-tegra.c b/drivers/pci/controller/pci-tegra.c index 99d505a85067..74c0ddd43381 100644 --- a/drivers/pci/controller/pci-tegra.c +++ b/drivers/pci/controller/pci-tegra.c @@ -2267,13 +2267,15 @@ static int tegra_pcie_parse_dt(struct tegra_pcie *pcie) rp->np = port; rp->base = devm_pci_remap_cfg_resource(dev, &rp->regs); - if (IS_ERR(rp->base)) - return PTR_ERR(rp->base); + if (IS_ERR(rp->base)) { + err = PTR_ERR(rp->base); + goto err_node_put; + } label = devm_kasprintf(dev, GFP_KERNEL, "pex-reset-%u", index); if (!label) { - dev_err(dev, "failed to create reset GPIO label\n"); - return -ENOMEM; + err = -ENOMEM; + goto err_node_put; } /* @@ -2289,9 +2291,10 @@ static int tegra_pcie_parse_dt(struct tegra_pcie *pcie) if (PTR_ERR(rp->reset_gpio) == -ENOENT) { rp->reset_gpio = NULL; } else { - dev_err(dev, "failed to get reset GPIO: %d\n", - err); - return PTR_ERR(rp->reset_gpio); + dev_err(dev, "failed to get reset GPIO: %ld\n", + PTR_ERR(rp->reset_gpio)); + err = PTR_ERR(rp->reset_gpio); + goto err_node_put; } } diff --git a/drivers/pci/controller/pcie-mediatek.c b/drivers/pci/controller/pcie-mediatek.c index 728a59655825..ff22bca818f3 100644 --- a/drivers/pci/controller/pcie-mediatek.c +++ b/drivers/pci/controller/pcie-mediatek.c @@ -623,14 +623,20 @@ static void mtk_pcie_intr_handler(struct irq_desc *desc) if (status & MSI_STATUS){ unsigned long imsi_status; + /* + * The interrupt status can be cleared even if the + * MSI status remains pending. As such, given the + * edge-triggered interrupt type, its status should + * be cleared before being dispatched to the + * handler of the underlying device. + */ + writel(MSI_STATUS, port->base + PCIE_INT_STATUS); while ((imsi_status = readl(port->base + PCIE_IMSI_STATUS))) { for_each_set_bit(bit, &imsi_status, MTK_MSI_IRQS_NUM) { virq = irq_find_mapping(port->inner_domain, bit); generic_handle_irq(virq); } } - /* Clear MSI interrupt status */ - writel(MSI_STATUS, port->base + PCIE_INT_STATUS); } } |