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| author |   Maninder Singh <maninder1.s@samsung.com> | 2015-07-09 14:41:53 +0530 |
|---|---|---|
| committer |   Oded Gabbay <oded.gabbay@gmail.com> | 2015-07-09 13:27:52 +0300 |
| commit | a0f67441b06525a1e5fd713ba0d75af4e5d6b198 (patch) | |
| tree | 950cc3374a7a15424004737aa30093d6e4407a8d /drivers | |
| parent | Linux 4.2-rc1 (diff) | |
| download | linux-dev-a0f67441b06525a1e5fd713ba0d75af4e5d6b198.tar.xz linux-dev-a0f67441b06525a1e5fd713ba0d75af4e5d6b198.zip | |
drm/amdkfd: validate pdd where it acquired first
Currently pdd is validate after dereferencing it, which is
not correct, Thus validate pdd before its first use.
Signed-off-by: Maninder Singh <maninder1.s@samsung.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_process.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c index 8a1f999daa24..9be007081b72 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c @@ -420,6 +420,12 @@ void kfd_unbind_process_from_device(struct kfd_dev *dev, unsigned int pasid) pqm_uninit(&p->pqm); pdd = kfd_get_process_device_data(dev, p); + + if (!pdd) { + mutex_unlock(&p->mutex); + return; + } + if (pdd->reset_wavefronts) { dbgdev_wave_reset_wavefronts(pdd->dev, p); 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 * because the IOMMU called us. */ - if (pdd) - pdd->bound = false; + pdd->bound = false; mutex_unlock(&p->mutex); } |