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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-16 08:39:52 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-16 08:39:52 -0800 |
| commit | 4c44323db15f26f4c744f06179daa43711cdb708 (patch) | |
| tree | e9e7a1fc18127ac1f6016a9f292dde72ce3d2487 /drivers/gpu/drm/i915/i915_irq.c | |
| parent | 50246dd41ccbcb47beb06d6c1d9355f6b7137a11 (diff) | |
| parent | 34b8686e12eaf9878aaab89e92222060c3e7cc48 (diff) | |
Merge branch 'drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
drm/i915: lock correct mutex around object unreference.
drm/i915: add support for physical memory objects
drm/i915: make LVDS fixed mode a preferred mode
drm: handle depth & bpp changes correctly
drm: initial KMS config fixes
drm/i915: setup sarea properly in master_priv
drm/i915: set vblank enabled flag correctly across IRQ install/uninstall
drm/i915: don't enable vblanks on disabled pipes
Diffstat (limited to 'drivers/gpu/drm/i915/i915_irq.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_irq.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 0cadafbef41..6290219de6c 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -411,6 +411,12 @@ int i915_enable_vblank(struct drm_device *dev, int pipe) { drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; unsigned long irqflags; + int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF; + u32 pipeconf; + + pipeconf = I915_READ(pipeconf_reg); + if (!(pipeconf & PIPEACONF_ENABLE)) + return -EINVAL; spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags); if (IS_I965G(dev)) |