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drm/i915: Hold pc8 lock around toggling pc8.gpu_idle

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We need to hold the pc8 lock around toggling the value of gpu_idle.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Chris Wilson 2013-11-18 18:32:36 -08:00 committed by Daniel Vetter
parent 4ea67bc700
commit 3458122e27
1 changed files with 6 additions and 2 deletions
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8
drivers/gpu/drm/i915/intel_display.c
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@ -6761,18 +6761,22 @@ done:
static void hsw_package_c8_gpu_idle(struct drm_i915_private *dev_priv) static void hsw_package_c8_gpu_idle(struct drm_i915_private *dev_priv)
{ {
mutex_lock(&dev_priv->pc8.lock);
if (!dev_priv->pc8.gpu_idle) { if (!dev_priv->pc8.gpu_idle) {
dev_priv->pc8.gpu_idle = true; dev_priv->pc8.gpu_idle = true;
hsw_enable_package_c8(dev_priv); __hsw_enable_package_c8(dev_priv);
} }
mutex_unlock(&dev_priv->pc8.lock);
} }
static void hsw_package_c8_gpu_busy(struct drm_i915_private *dev_priv) static void hsw_package_c8_gpu_busy(struct drm_i915_private *dev_priv)
{ {
mutex_lock(&dev_priv->pc8.lock);
if (dev_priv->pc8.gpu_idle) { if (dev_priv->pc8.gpu_idle) {
dev_priv->pc8.gpu_idle = false; dev_priv->pc8.gpu_idle = false;
hsw_disable_package_c8(dev_priv); __hsw_disable_package_c8(dev_priv);
} }
mutex_unlock(&dev_priv->pc8.lock);
} }
#define for_each_power_domain(domain, mask) \ #define for_each_power_domain(domain, mask) \