AuxXxilium/linux_dsm_epyc7002
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Merge tag 'drm-amdkfd-fixes-2015-07-09' of git://people.freedesktop.org/~gabbayo/linux into drm-fixes

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A single fix so far for 4.2:
- checking a pointer is not null before using it

* tag 'drm-amdkfd-fixes-2015-07-09' of git://people.freedesktop.org/~gabbayo/linux:
  drm/amdkfd: validate pdd where it acquired first
This commit is contained in:
Dave Airlie 2015-07-10 15:56:19 +10:00
commit 008b3f1f1c
1 changed files with 7 additions and 2 deletions
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9
drivers/gpu/drm/amd/amdkfd/kfd_process.c
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@ -420,6 +420,12 @@ void kfd_unbind_process_from_device(struct kfd_dev *dev, unsigned int pasid)
pqm_uninit(&p->pqm); pqm_uninit(&p->pqm);
pdd = kfd_get_process_device_data(dev, p); pdd = kfd_get_process_device_data(dev, p);
if (!pdd) {
mutex_unlock(&p->mutex);
return;
}
if (pdd->reset_wavefronts) { if (pdd->reset_wavefronts) {
dbgdev_wave_reset_wavefronts(pdd->dev, p); dbgdev_wave_reset_wavefronts(pdd->dev, p);
pdd->reset_wavefronts = false; pdd->reset_wavefronts = false;
@ -431,8 +437,7 @@ void kfd_unbind_process_from_device(struct kfd_dev *dev, unsigned int pasid)
* We don't call amd_iommu_unbind_pasid() here * We don't call amd_iommu_unbind_pasid() here
* because the IOMMU called us. * because the IOMMU called us.
*/ */
if (pdd) pdd->bound = false;
pdd->bound = false;
mutex_unlock(&p->mutex); mutex_unlock(&p->mutex);
} }