[PATCH V1 09/13] accel/amdxdna: Use unsigned long for nr_pages in amdxdna_hmm_register()

[Lizhi Hou]

nr_pages is declared as u32 in amdxdna_hmm_register(), which may not be
large enough to represent the number of pages for large mappings.

Use unsigned long for nr_pages to avoid potential overflow.

Fixes: ac49797c1815 ("accel/amdxdna: Add GEM buffer object management")
Signed-off-by: Lizhi Hou <lizhi....@amd.com>
---
 drivers/accel/amdxdna/amdxdna_gem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/accel/amdxdna/amdxdna_gem.c 
b/drivers/accel/amdxdna/amdxdna_gem.c
index aef4c23a1a66..201536aff440 100644
--- a/drivers/accel/amdxdna/amdxdna_gem.c
+++ b/drivers/accel/amdxdna/amdxdna_gem.c
@@ -351,7 +351,7 @@ static int amdxdna_hmm_register(struct amdxdna_gem_obj *abo,
        unsigned long len = vma->vm_end - vma->vm_start;
        unsigned long addr = vma->vm_start;
        struct amdxdna_umap *mapp;
-       u32 nr_pages;
+       unsigned long nr_pages;
        int ret;
 
        if (!amdxdna_pasid_on(abo->client)) {
-- 
2.34.1