X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=mm%2Fmmap.c;h=fa5cb89348bad2b034e3f2f9d82cac8e06390018;hb=089c13477b5bed0c83ebb4e7092f254b70df080d;hp=513286cff3a23e66ea5a8c0c98fa76a6e56e7bcf;hpb=8df8c7d7220e4ea159ca57edbf7f2c6cbf6a7278;p=firefly-linux-kernel-4.4.55.git

diff --git a/mm/mmap.c b/mm/mmap.c
index 513286cff3a2..fa5cb89348ba 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2574,6 +2574,16 @@ int do_munmap(struct mm_struct *mm, unsigned long start, size_t len)
 	detach_vmas_to_be_unmapped(mm, vma, prev, end);
 	unmap_region(mm, vma, prev, start, end);
 
+#ifdef CONFIG_ARCH_ROCKCHIP
+	{
+		extern int ion_munmap(void *dmabuf, struct vm_area_struct *vma);
+		extern int dma_buf_is_dma_buf(struct file *file);
+		if (vma->vm_file && dma_buf_is_dma_buf(vma->vm_file)) {
+			ion_munmap(vma->vm_file->private_data, vma);
+		}
+	}
+#endif
+
 	/* Fix up all other VM information */
 	remove_vma_list(mm, vma);