From: Ralph Campbell <rcampbell@xxxxxxxxxx>
Constify pointer parameter to avoid issue when use from code that
only has const struct page pointer to use in the first place.
Signed-off-by: Ralph Campbell <rcampbell@xxxxxxxxxx>
Signed-off-by: Jérôme Glisse <jglisse@xxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/hmm.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/linux/hmm.h b/include/linux/hmm.h
index 96e6997..325017a 100644
--- a/include/linux/hmm.h
+++ b/include/linux/hmm.h
@@ -471,9 +471,9 @@ static inline void hmm_devmem_page_set_drvdata(struct page *page,
* @page: pointer to struct page
* Return: driver data value
*/
-static inline unsigned long hmm_devmem_page_get_drvdata(struct page *page)
+static inline unsigned long hmm_devmem_page_get_drvdata(const struct page *page)
{
- unsigned long *drvdata = (unsigned long *)&page->pgmap;
+ const unsigned long *drvdata = (const unsigned long *)&page->pgmap;
return drvdata[1];
}
--
2.4.11
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