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xhci: Enable RPM on controllers that support low-power states

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commit a5d6264b638efeca35eff72177fd28d149e0764b upstream.

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
Cc: Oleksandr Natalenko <oleksandr@natalenko.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Basavaraj Natikar
2023-10-19 13:29:20 +03:00
committed by Greg Kroah-Hartman
parent 5e34fe50a9
commit f04fa1e199
1 changed files with 3 additions and 1 deletions
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4
drivers/usb/host/xhci-pci.c
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@@ -505,7 +505,9 @@ 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 */ /* USB-2 and USB-3 roothubs initialized, allow runtime pm suspend */
pm_runtime_put_noidle(&dev->dev); 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); pm_runtime_allow(&dev->dev);
dma_set_max_seg_size(&dev->dev, UINT_MAX); dma_set_max_seg_size(&dev->dev, UINT_MAX);