From: Rajvi Jingar <rajvi.jingar@linux.intel.com>
To: rafael.j.wysocki@intel.com, bhelgaas@google.com
Cc: rajvi.jingar@linux.intel.com, david.e.box@linux.intel.com,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-pm@vger.kernel.org
Subject: [PATCH 2/2] PCI/PTM: fix in pci_disable_ptm()
Date: Thu, 7 Jul 2022 10:22:05 -0700 [thread overview]
Message-ID: <20220707172205.3205110-2-rajvi.jingar@linux.intel.com> (raw)
In-Reply-To: <20220707172205.3205110-1-rajvi.jingar@linux.intel.com>
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@linux.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
next prev parent reply other threads:[~2022-07-07 17:22 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-07 17:22 [PATCH 1/2] PCI/PM: refactor pci_pm_suspend_noirq() Rajvi Jingar
2022-07-07 17:22 ` Rajvi Jingar [this message]
2022-07-07 18:27 ` [PATCH 2/2] PCI/PTM: fix in pci_disable_ptm() Rafael J. Wysocki
2022-07-07 18:32 ` Rafael J. Wysocki
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