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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2010-02-18 23:06:27 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-02-22 08:47:14 -0800 |
| commit | 61caf87cb5c2a198966018343a6ce4c5ab6cf8df (patch) | |
| tree | 4fa1ab6a366627a8d3113b4be62f9c251307a00a | |
| parent | 4386b58349366511df1c4fe1f7917c198f71529a (diff) | |
| download | linux-61caf87cb5c2a198966018343a6ce4c5ab6cf8df.tar.bz2 | |
i915 / PM: Fix hibernate regression caused by suspend/resume splitting
Commit 84b79f8d2882b0a84330c04839ed4d3cefd2ff77 (drm/i915: Fix crash
while aborting hibernation) attempted to fix a regression introduced
by commit cbda12d77ea590082edb6d30bd342a67ebc459e0 (drm/i915:
implement new pm ops for i915), but it went too far trying to split
the freeze/suspend and resume/thaw parts of the code. As a result,
it introduced another regression, which only is visible on some systems.
Fix the problem by merging i915_drm_suspend() with
i915_drm_freeze() and moving some code from i915_resume()
into i915_drm_thaw(), so that intel_opregion_free() and
intel_opregion_init() are also executed in the freeze and thaw code
paths, respectively.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reported-and-tested-by: Pedro Ribeiro <pedrib@gmail.com>
Tested-by: Tino Keitel <tino.keitel@tikei.de>
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.c | 30 |
1 files changed, 9 insertions, 21 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 79beffcf5936..cf4cb3e9a0c2 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -176,6 +176,8 @@ MODULE_DEVICE_TABLE(pci, pciidlist); static int i915_drm_freeze(struct drm_device *dev) { + struct drm_i915_private *dev_priv = dev->dev_private; + pci_save_state(dev->pdev); /* If KMS is active, we do the leavevt stuff here */ @@ -191,17 +193,12 @@ static int i915_drm_freeze(struct drm_device *dev) i915_save_state(dev); - return 0; -} - -static void i915_drm_suspend(struct drm_device *dev) -{ - struct drm_i915_private *dev_priv = dev->dev_private; - intel_opregion_free(dev, 1); /* Modeset on resume, not lid events */ dev_priv->modeset_on_lid = 0; + + return 0; } static int i915_suspend(struct drm_device *dev, pm_message_t state) @@ -221,8 +218,6 @@ static int i915_suspend(struct drm_device *dev, pm_message_t state) if (error) return error; - i915_drm_suspend(dev); - if (state.event == PM_EVENT_SUSPEND) { /* Shut down the device */ pci_disable_device(dev->pdev); @@ -237,6 +232,10 @@ static int i915_drm_thaw(struct drm_device *dev) struct drm_i915_private *dev_priv = dev->dev_private; int error = 0; + i915_restore_state(dev); + + intel_opregion_init(dev, 1); + /* KMS EnterVT equivalent */ if (drm_core_check_feature(dev, DRIVER_MODESET)) { mutex_lock(&dev->struct_mutex); @@ -263,10 +262,6 @@ static int i915_resume(struct drm_device *dev) pci_set_master(dev->pdev); - i915_restore_state(dev); - - intel_opregion_init(dev, 1); - return i915_drm_thaw(dev); } @@ -423,8 +418,6 @@ static int i915_pm_suspend(struct device *dev) if (error) return error; - i915_drm_suspend(drm_dev); - pci_disable_device(pdev); pci_set_power_state(pdev, PCI_D3hot); @@ -464,13 +457,8 @@ static int i915_pm_poweroff(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); struct drm_device *drm_dev = pci_get_drvdata(pdev); - int error; - - error = i915_drm_freeze(drm_dev); - if (!error) - i915_drm_suspend(drm_dev); - return error; + return i915_drm_freeze(drm_dev); } const struct dev_pm_ops i915_pm_ops = { |