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Commit 0bea803e authored by Ralph Campbell's avatar Ralph Campbell Committed by Linus Torvalds
Browse files

mm/hmm: constify hmm_devmem_page_get_drvdata() parameter 

Constify pointer parameter to avoid issue when use from code that only
has const struct page pointer to use in the first place.

Link: http://lkml.kernel.org/r/1506972774-10191-1-git-send-email-jglisse@redhat.com


Signed-off-by: default avatarRalph Campbell <rcampbell@nvidia.com>
Signed-off-by: default avatarJérôme Glisse <jglisse@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 007ab7b4

include/linux/hmm.h

+2 −2
Original line number Diff line number Diff line
@@ -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];

}