Merge branch 'for-airlied' of git://people.freedesktop.org/~danvet/drm-intel into drm-next

Last pile of stuff for 3.7, essentially just a bunch of bigger fixes and a
few less intrusive features:

- cpu freq interface in sysfs from Ben
- cpu edp fixes and some related cleanups
- write-combining ptes for pre-gen6 (Chris)
- basic CADL support (Peter Wu), this fixes quite a few issues with
  backlights ...
- rework of the gem backing pages handling (preps for stolen mem handling)
  from Chris
- some more cleanup-fallout from the modeset-rework

On top of that I've done a backmerge of -rc7(since the conflicts got too
messy and I've pushed out broken merged trees too often). I've also
included 3 fixes on top of what QA beat on:

- Fix for a infoframe handling regression in 3.5 - infoframe blows up too
  often and 3.6 is pretty much done, so I'd like to merge that through
  -next and the stable process and give it more exposure before it lands
  in a stable tree.
- ioctl cosmetics^Wspelling fix in the structs (userspace won't be
  affected, since all existing userspace uses private copies of the ioctl
  struct definitions, and the struct layout itself is abi compatible).
- Bugfix for a regression introduced in this pull's testing cycle.

* 'for-airlied' of git://people.freedesktop.org/~danvet/drm-intel: (695 commits)
  drm/i915: Wrap external callers to IPS state with appropriate locks
  drm/i915: s/cacheing/caching/
  drm/i915: make sure we write all the DIP data bytes
  drm/i915: BUG() on unexpected HDMI register
  ...

1 files changed, 42 insertions, 0 deletions

diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 6869009c739..02d107b1528 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -458,6 +458,40 @@ boot_vga_show(struct device *dev, struct device_attribute *attr, char *buf)
 }
 struct device_attribute vga_attr = __ATTR_RO(boot_vga);
 
+static void
+pci_config_pm_runtime_get(struct pci_dev *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device *parent = dev->parent;
+
+	if (parent)
+		pm_runtime_get_sync(parent);
+	pm_runtime_get_noresume(dev);
+	/*
+	 * pdev->current_state is set to PCI_D3cold during suspending,
+	 * so wait until suspending completes
+	 */
+	pm_runtime_barrier(dev);
+	/*
+	 * Only need to resume devices in D3cold, because config
+	 * registers are still accessible for devices suspended but
+	 * not in D3cold.
+	 */
+	if (pdev->current_state == PCI_D3cold)
+		pm_runtime_resume(dev);
+}
+
+static void
+pci_config_pm_runtime_put(struct pci_dev *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device *parent = dev->parent;
+
+	pm_runtime_put(dev);
+	if (parent)
+		pm_runtime_put_sync(parent);
+}
+
 static ssize_t
 pci_read_config(struct file *filp, struct kobject *kobj,
 		struct bin_attribute *bin_attr,
@@ -484,6 +518,8 @@ pci_read_config(struct file *filp, struct kobject *kobj,
 		size = count;
 	}
 
+	pci_config_pm_runtime_get(dev);
+
 	if ((off & 1) && size) {
 		u8 val;
 		pci_user_read_config_byte(dev, off, &val);
@@ -529,6 +565,8 @@ pci_read_config(struct file *filp, struct kobject *kobj,
 		--size;
 	}
 
+	pci_config_pm_runtime_put(dev);
+
 	return count;
 }
 
@@ -549,6 +587,8 @@ pci_write_config(struct file* filp, struct kobject *kobj,
 		count = size;
 	}
 	
+	pci_config_pm_runtime_get(dev);
+
 	if ((off & 1) && size) {
 		pci_user_write_config_byte(dev, off, data[off - init_off]);
 		off++;
@@ -587,6 +627,8 @@ pci_write_config(struct file* filp, struct kobject *kobj,
 		--size;
 	}
 
+	pci_config_pm_runtime_put(dev);
+
 	return count;
 }