diff options
| -rw-r--r-- | drivers/pci/controller/pci-tegra.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/pci/controller/pci-tegra.c b/drivers/pci/controller/pci-tegra.c index 5d93bb32ad44..b823a6391b8f 100644 --- a/drivers/pci/controller/pci-tegra.c +++ b/drivers/pci/controller/pci-tegra.c @@ -1641,6 +1641,15 @@ static int tegra_pcie_disable_msi(struct tegra_pcie *pcie) return 0; } +static void tegra_pcie_disable_interrupts(struct tegra_pcie *pcie) +{ + u32 value; + + value = afi_readl(pcie, AFI_INTR_MASK); + value &= ~AFI_INTR_MASK_INT_MASK; + afi_writel(pcie, value, AFI_INTR_MASK); +} + static int tegra_pcie_get_xbar_config(struct tegra_pcie *pcie, u32 lanes, u32 *xbar) { @@ -2486,6 +2495,12 @@ static int __maybe_unused tegra_pcie_pm_suspend(struct device *dev) tegra_pcie_disable_ports(pcie); + /* + * AFI_INTR is unmasked in tegra_pcie_enable_controller(), mask it to + * avoid unwanted interrupts raised by AFI after pex_rst is asserted. + */ + tegra_pcie_disable_interrupts(pcie); + if (pcie->soc->program_uphy) { err = tegra_pcie_phy_power_off(pcie); if (err < 0) |