Messages in this thread Patch in this message | | | From | "Rafael J. Wysocki" <> | Subject | [PATCH] PCI / PM: Add dev_dbg() to print device suspend power states | Date | Sat, 30 Sep 2017 01:31:15 +0200 |
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From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
It sometimes is useful to know what power states the kernel thinks it puts PCI devices into during system suspend, so add a dev_dbg() statement for that.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> --- drivers/pci/pci-driver.c | 3 +++ 1 file changed, 3 insertions(+)
Index: linux-pm/drivers/pci/pci-driver.c =================================================================== --- linux-pm.orig/drivers/pci/pci-driver.c +++ linux-pm/drivers/pci/pci-driver.c @@ -798,6 +798,9 @@ static int pci_pm_suspend_noirq(struct d pci_prepare_to_sleep(pci_dev); } + dev_dbg(dev, "PCI PM: Suspend power state: %s\n", + pci_power_name(pci_dev->current_state)); + pci_pm_set_unknown_state(pci_dev); /*
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