linux-kernel - [PATCH 2/2] PCI/PTM: fix in pci_disable

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Date:   Thu,  7 Jul 2022 10:22:05 -0700
From:   Rajvi Jingar <rajvi.jingar@...ux.intel.com>
To:     rafael.j.wysocki@...el.com, bhelgaas@...gle.com
Cc:     rajvi.jingar@...ux.intel.com, david.e.box@...ux.intel.com,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org
Subject: [PATCH 2/2] PCI/PTM: fix in pci_disable_ptm()

Set ptm_enabled from 'struct pci_dev' to 0 in pci_ptm_disable() to
save the disabled PTM state for the device.

Fixes: a697f072f5da ("PCI: Disable PTM during suspend to save power")
Signed-off-by: Rajvi Jingar <rajvi.jingar@...ux.intel.com>
---
 drivers/pci/pcie/ptm.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pci/pcie/ptm.c b/drivers/pci/pcie/ptm.c
index 368a254e3124..746e29779c27 100644
--- a/drivers/pci/pcie/ptm.c
+++ b/drivers/pci/pcie/ptm.c
@@ -44,6 +44,7 @@ void pci_disable_ptm(struct pci_dev *dev)
 	pci_read_config_word(dev, ptm + PCI_PTM_CTRL, &ctrl);
 	ctrl &= ~(PCI_PTM_CTRL_ENABLE | PCI_PTM_CTRL_ROOT);
 	pci_write_config_word(dev, ptm + PCI_PTM_CTRL, ctrl);
+	dev->ptm_enabled = 0;
 }
 
 void pci_save_ptm_state(struct pci_dev *dev)
-- 
2.25.1