diff options
Diffstat (limited to 'drivers/pci/quirks.c')
| -rw-r--r-- | drivers/pci/quirks.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 22b2bb1109c9..6d74386eadc2 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -27,6 +27,7 @@ #include <linux/nvme.h> #include <linux/platform_data/x86/apple.h> #include <linux/pm_runtime.h> +#include <linux/suspend.h> #include <linux/switchtec.h> #include <asm/dma.h> /* isa_dma_bridge_buggy */ #include "pci.h" @@ -3656,6 +3657,16 @@ static void quirk_apple_poweroff_thunderbolt(struct pci_dev *dev) return; if (pci_pcie_type(dev) != PCI_EXP_TYPE_UPSTREAM) return; + + /* + * SXIO/SXFP/SXLF turns off power to the Thunderbolt controller. + * We don't know how to turn it back on again, but firmware does, + * so we can only use SXIO/SXFP/SXLF if we're suspending via + * firmware. + */ + if (!pm_suspend_via_firmware()) + return; + bridge = ACPI_HANDLE(&dev->dev); if (!bridge) return; |