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Commit a0f67441 authored by Maninder Singh's avatar Maninder Singh Committed by Oded Gabbay
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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: default avatarManinder Singh <maninder1.s@samsung.com>
Signed-off-by: default avatarOded Gabbay <oded.gabbay@gmail.com>
parent d770e558

drivers/gpu/drm/amd/amdkfd/kfd_process.c

+7 −2
Original line number Diff line number Diff line
@@ -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;
@@ -431,7 +437,6 @@ 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;



	mutex_unlock(&p->mutex);