drm/amdkfd: Fix doorbell initialization and finalization
Handle errors in doorbell aperture initialization instead of BUG_ON.
iounmap doorbell aperture during finalization.
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
index 469b7ea..f0d55cc0 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
@@ -576,7 +576,8 @@ unsigned int kfd_pasid_alloc(void);
void kfd_pasid_free(unsigned int pasid);
/* Doorbells */
-void kfd_doorbell_init(struct kfd_dev *kfd);
+int kfd_doorbell_init(struct kfd_dev *kfd);
+void kfd_doorbell_fini(struct kfd_dev *kfd);
int kfd_doorbell_mmap(struct kfd_process *process, struct vm_area_struct *vma);
u32 __iomem *kfd_get_kernel_doorbell(struct kfd_dev *kfd,
unsigned int *doorbell_off);