drm/i915: initialize gt_lock early with other spin locks

commit 14c5cec5d0cd73e7e9d4fbea2bbfeea8f3ade871 upstream.

commit 181d1b9e31c668259d3798c521672afb8edd355c
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Sun Jul 21 13:16:24 2013 +0200

    drm/i915: fix up gt init sequence fallout

moved dev_priv->gt_lock initialization after use. Do the initialization
much earlier with other spin lock initializations.

Reported-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Zhouping Liu <zliu@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index f9685900bad81a041d673e38e20260063a1fc22d..17d9b0b6afc5442424fcc31d7a8c6f84f9c006b3 100644 (file)
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1514,6 +1514,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
        spin_lock_init(&dev_priv->irq_lock);
        spin_lock_init(&dev_priv->gpu_error.lock);
        spin_lock_init(&dev_priv->rps.lock);
+       spin_lock_init(&dev_priv->gt_lock);
        mutex_init(&dev_priv->dpio_lock);
        mutex_init(&dev_priv->rps.hw_lock);
        mutex_init(&dev_priv->modeset_restore_lock);

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 2cfe9f6b0bf2c560ac047b35aa76bba6f58f7ef3..94ad6bc08260fd2161182e7201fc1f75aa08ed56 100644 (file)
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4507,8 +4507,6 @@ void intel_gt_init(struct drm_device *dev)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
 
-       spin_lock_init(&dev_priv->gt_lock);
-
        if (IS_VALLEYVIEW(dev)) {
                dev_priv->gt.force_wake_get = vlv_force_wake_get;
                dev_priv->gt.force_wake_put = vlv_force_wake_put;