diff options
| author | Basavaraj Natikar <Basavaraj.Natikar@amd.com> | 2023-10-19 13:29:20 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-10-21 13:38:54 +0300 |
| commit | a5d6264b638efeca35eff72177fd28d149e0764b (patch) | |
| tree | 41c624a7167a394ae7a36e0a6e376597b7829572 /drivers/usb | |
| parent | 4baf1218150985ee3ab0a27220456a1f027ea0ac (diff) | |
| download | linux-a5d6264b638efeca35eff72177fd28d149e0764b.tar.xz | |
xhci: Enable RPM on controllers that support low-power states
Use the low-power states of the underlying platform to enable runtime PM.
If the platform doesn't support runtime D3, then enabling default RPM will
result in the controller malfunctioning, as in the case of hotplug devices
not being detected because of a failed interrupt generation.
Cc: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20231019102924.2797346-16-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/host/xhci-pci.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index bde43cef8846..95ed9404f6f8 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -695,7 +695,9 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) /* USB-2 and USB-3 roothubs initialized, allow runtime pm suspend */ pm_runtime_put_noidle(&dev->dev); - if (xhci->quirks & XHCI_DEFAULT_PM_RUNTIME_ALLOW) + if (pci_choose_state(dev, PMSG_SUSPEND) == PCI_D0) + pm_runtime_forbid(&dev->dev); + else if (xhci->quirks & XHCI_DEFAULT_PM_RUNTIME_ALLOW) pm_runtime_allow(&dev->dev); dma_set_max_seg_size(&dev->dev, UINT_MAX); |