From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Date: Fri, 29 Sep 2017 23:31:15 +0000 (+0200)
Subject: PCI / PM: Add dev_dbg() to print device suspend power states
X-Git-Tag: v4.15-rc1~145^2~9^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ca67ab5c5afbcec9df199e01838270eb5668af68;p=thirdparty%2Flinux.git

PCI / PM: Add dev_dbg() to print device suspend power states

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>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
---

diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index 3d04b59ffdb2a..9be563067c0cd 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -798,6 +798,9 @@ static int pci_pm_suspend_noirq(struct device *dev)
 			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);
 
 	/*