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drm/i915: get runtime PM reference around GEM set_tiling IOCTL 

After fixing the same issue in the set_caching IOCTL and Chris' request
to check out the possibilities for an improved RPM ref handling I
noticed that we have the same issue in the set_tiling IOCTL. Fix this
up.I didn't see any bug reports about this one, but the GTT unbind
operation on this path accesses the HW, which needs the ref.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1447092986-11165-1-git-send-email-imre.deak@intel.com
This commit is contained in:
Imre Deak 2015-11-09 20:16:26 +02:00
parent 5bab6f60cb
commit e64e6bd0f4
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/i915/i915_gem_tiling.c
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@ -176,6 +176,8 @@ i915_gem_set_tiling(struct drm_device *dev, void *data,
return -EINVAL;
}
intel_runtime_pm_get(dev_priv);
mutex_lock(&dev->struct_mutex);
if (obj->pin_display || obj->framebuffer_references) {
ret = -EBUSY;
@ -269,6 +271,8 @@ err:
drm_gem_object_unreference(&obj->base);
mutex_unlock(&dev->struct_mutex);
intel_runtime_pm_put(dev_priv);
return ret;
}