From f227b246307e0cf3091e13e7fbae3974aaf38eb9 Mon Sep 17 00:00:00 2001 From: Qiang Yu Date: Tue, 3 Mar 2026 01:02:14 -0800 Subject: [PATCH] bus: mhi: host: pci_generic: Add pm_runtime_forbid() in remove callback Add pm_runtime_forbid() to balance the pm_runtime_allow() call made during Mission Mode transition. Without this, the device remains in runtime PM allowed state even after driver removal. Fixes: 855a70c12021 ("bus: mhi: Add MHI PCI support for WWAN modems") Signed-off-by: Qiang Yu [mani: moved pm_runtime_forbid() to the start of remove()] Signed-off-by: Manivannan Sadhasivam Link: https://patch.msgid.link/20260303-b4-async_power_on-v2-2-d3db81eb457d@oss.qualcomm.com --- drivers/bus/mhi/host/pci_generic.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/bus/mhi/host/pci_generic.c b/drivers/bus/mhi/host/pci_generic.c index b6b8ea3a11f3..391ab146f501 100644 --- a/drivers/bus/mhi/host/pci_generic.c +++ b/drivers/bus/mhi/host/pci_generic.c @@ -1452,6 +1452,7 @@ static void mhi_pci_remove(struct pci_dev *pdev) struct mhi_pci_device *mhi_pdev = pci_get_drvdata(pdev); struct mhi_controller *mhi_cntrl = &mhi_pdev->mhi_cntrl; + pm_runtime_forbid(&pdev->dev); pci_disable_sriov(pdev); if (pdev->is_physfn)