[RESEND PATCH 1/3] staging: media: atomisp: Convert kmap() to kmap_local_page()

["Fabio M. De Francesco" <fmdefrancesco@gmail.com>]

The use of kmap() is being deprecated in favor of kmap_local_page() where
it is feasible. With kmap_local_page(), the mapping is per thread, CPU
local and not globally visible.

load_and_flush_by_kmap() is a function where the use of kmap_local_page()
in place of kmap() is correctly suited.

Convert load_and_flush_by_kmap() from kmap() to kmap_local_page().

Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
---
 drivers/staging/media/atomisp/pci/hmm/hmm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/media/atomisp/pci/hmm/hmm.c b/drivers/staging/media/atomisp/pci/hmm/hmm.c
index c1cda16f2dc0..6394385b6637 100644
--- a/drivers/staging/media/atomisp/pci/hmm/hmm.c
+++ b/drivers/staging/media/atomisp/pci/hmm/hmm.c
@@ -350,7 +350,7 @@ static int load_and_flush_by_kmap(ia_css_ptr virt, void *data,
 		idx = (virt - bo->start) >> PAGE_SHIFT;
 		offset = (virt - bo->start) - (idx << PAGE_SHIFT);
 
-		src = (char *)kmap(bo->page_obj[idx].page) + offset;
+		src = (char *)kmap_local_page(bo->page_obj[idx].page) + offset;
 
 		if ((bytes + offset) >= PAGE_SIZE) {
 			len = PAGE_SIZE - offset;
@@ -369,7 +369,7 @@ static int load_and_flush_by_kmap(ia_css_ptr virt, void *data,
 
 		clflush_cache_range(src, len);
 
-		kunmap(bo->page_obj[idx].page);
+		kunmap_local(src);
 	}
 
 	return 0;
-- 
2.36.1