PCI/PM/Runtime: make PCI traces quieter (Closes: #684049)

svn path=/dists/sid/linux/; revision=19320

debian/changelog

@@ -89,6 +89,7 @@ linux (3.2.27-1) UNRELEASED; urgency=low
     - time/rt: Fix up leap-second backport for RT changes
   * rds: set correct msg_namelen (CVE-2012-3430)
   * e1000: add dropped DMA receive enable back in for WoL (Closes: #684618)
+  * PCI/PM/Runtime: make PCI traces quieter (Closes: #684049)
 
  -- Ben Hutchings <ben@decadent.org.uk>  Tue, 24 Jul 2012 02:20:37 +0100
 

debian/patches/bugfix/all/PCI-PM-Runtime-make-PCI-traces-quieter.patch

@@ -0,0 +1,87 @@
+From: Vincent Palatin <vpalatin@chromium.org>
+Date: Mon, 5 Dec 2011 11:51:18 -0800
+Subject: PCI/PM/Runtime: make PCI traces quieter
+
+commit 85b8582d7ca516030efb84d94fa29a73c1d9a125 upstream.
+
+When the runtime PM is activated on PCI, if a device switches state
+frequently (e.g. an EHCI controller with autosuspending USB devices
+connected) the PCI configuration traces might be very verbose in the
+kernel log.  Let's guard those traces with DEBUG condition.
+
+Acked-by: "Rafael J. Wysocki" <rjw@sisk.pl>
+Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
+Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
+---
+ drivers/acpi/pci_irq.c  |   10 +++++-----
+ drivers/pci/pci.c       |    5 ++---
+ drivers/pci/setup-res.c |    6 +++---
+ 3 files changed, 10 insertions(+), 11 deletions(-)
+
+diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
+index 7f9eba9..0eefa12 100644
+--- a/drivers/acpi/pci_irq.c
++++ b/drivers/acpi/pci_irq.c
+@@ -487,10 +487,10 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
+ 	else
+ 		link_desc[0] = '\0';
+ 
+-	dev_info(&dev->dev, "PCI INT %c%s -> GSI %u (%s, %s) -> IRQ %d\n",
+-		 pin_name(pin), link_desc, gsi,
+-		 (triggering == ACPI_LEVEL_SENSITIVE) ? "level" : "edge",
+-		 (polarity == ACPI_ACTIVE_LOW) ? "low" : "high", dev->irq);
++	dev_dbg(&dev->dev, "PCI INT %c%s -> GSI %u (%s, %s) -> IRQ %d\n",
++		pin_name(pin), link_desc, gsi,
++		(triggering == ACPI_LEVEL_SENSITIVE) ? "level" : "edge",
++		(polarity == ACPI_ACTIVE_LOW) ? "low" : "high", dev->irq);
+ 
+ 	return 0;
+ }
+@@ -524,6 +524,6 @@ void acpi_pci_irq_disable(struct pci_dev *dev)
+ 	 * (e.g. PCI_UNDEFINED_IRQ).
+ 	 */
+ 
+-	dev_info(&dev->dev, "PCI INT %c disabled\n", pin_name(pin));
++	dev_dbg(&dev->dev, "PCI INT %c disabled\n", pin_name(pin));
+ 	acpi_unregister_gsi(gsi);
+ }
+diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
+index 5c5adef..54343aa 100644
+--- a/drivers/pci/pci.c
++++ b/drivers/pci/pci.c
+@@ -973,7 +973,7 @@ void pci_restore_state(struct pci_dev *dev)
+ 	for (i = 15; i >= 0; i--) {
+ 		pci_read_config_dword(dev, i * 4, &val);
+ 		if (val != dev->saved_config_space[i]) {
+-			dev_printk(KERN_DEBUG, &dev->dev, "restoring config "
++			dev_dbg(&dev->dev, "restoring config "
+ 				"space at offset %#x (was %#x, writing %#x)\n",
+ 				i, val, (int)dev->saved_config_space[i]);
+ 			pci_write_config_dword(dev,i * 4,
+@@ -1542,8 +1542,7 @@ void pci_pme_active(struct pci_dev *dev, bool enable)
+ 	}
+ 
+ out:
+-	dev_printk(KERN_DEBUG, &dev->dev, "PME# %s\n",
+-			enable ? "enabled" : "disabled");
++	dev_dbg(&dev->dev, "PME# %s\n", enable ? "enabled" : "disabled");
+ }
+ 
+ /**
+diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
+index 5717509b..b66bfdb 100644
+--- a/drivers/pci/setup-res.c
++++ b/drivers/pci/setup-res.c
+@@ -85,9 +85,9 @@ void pci_update_resource(struct pci_dev *dev, int resno)
+ 		}
+ 	}
+ 	res->flags &= ~IORESOURCE_UNSET;
+-	dev_info(&dev->dev, "BAR %d: set to %pR (PCI address [%#llx-%#llx])\n",
+-		 resno, res, (unsigned long long)region.start,
+-		 (unsigned long long)region.end);
++	dev_dbg(&dev->dev, "BAR %d: set to %pR (PCI address [%#llx-%#llx])\n",
++		resno, res, (unsigned long long)region.start,
++		(unsigned long long)region.end);
+ }
+ 
+ int pci_claim_resource(struct pci_dev *dev, int resource)

debian/patches/series

@@ -389,3 +389,4 @@ features/all/bql/skge-add-byte-queue-limit-support.patch
 
 bugfix/all/rds-set-correct-msg_namelen.patch
 bugfix/all/e1000-add-dropped-DMA-receive-enable-back-in-for-WoL.patch
+bugfix/all/PCI-PM-Runtime-make-PCI-traces-quieter.patch