diff mbox series

[3/3] nvme-pci: Make use of "suspend_poweroff" flag during system suspend

Message ID 20220513110027.31015-4-manivannan.sadhasivam@linaro.org (mailing list archive)
State Superseded
Headers show
Series PCI: Notify PCI drivers about powerdown during suspend | expand

Commit Message

Manivannan Sadhasivam May 13, 2022, 11 a.m. UTC 
On some platforms, the power to the PCI devices will be taken off during
system suspend. For these platforms, the PCI RC will set the
"system_poweroff" flag to notify the PCI device drivers of the poweroff
scenario.

Hence, make use of the flag in the system suspend path and if set, properly
shutdown the device.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
 drivers/nvme/host/pci.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index d817ca17463e..381bf0c7cf8d 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -3238,6 +3238,7 @@  static int nvme_suspend(struct device *dev)
 {
 	struct pci_dev *pdev = to_pci_dev(dev);
 	struct nvme_dev *ndev = pci_get_drvdata(pdev);
+	struct pci_host_bridge *bridge = pci_find_host_bridge(pdev->bus);
 	struct nvme_ctrl *ctrl = &ndev->ctrl;
 	int ret = -EBUSY;
 
@@ -3257,7 +3258,7 @@  static int nvme_suspend(struct device *dev)
 	 * state (which may not be possible if the link is up).
 	 */
 	if (pm_suspend_via_firmware() || !ctrl->npss ||
-	    !pcie_aspm_enabled(pdev) ||
+	    !pcie_aspm_enabled(pdev) || bridge->suspend_poweroff ||
 	    (ndev->ctrl.quirks & NVME_QUIRK_SIMPLE_SUSPEND))
 		return nvme_disable_prepare_reset(ndev, true);