The use of kmap() is being deprecated in favor of kmap_local_page()
where it is feasible. In file interface/vchiq_arm/vchiq_arm.c,
function free_pagelist() calls kmap() / kunmap() from two places.
With kmap_local_page(), the mapping is per thread, CPU local and not
globally visible. Therefore, free_pagelist() is a function where the
use of kmap_local_page() in place of kmap() is correctly suited.
Convert to kmap_local_page() but, instead of open coding it, use the
memcpy_to_page() helper.
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@xxxxxxxxx>
---
.../vc04_services/interface/vchiq_arm/vchiq_arm.c | 13 +++++--------
1 file changed, 5 insertions(+), 8 deletions(-)
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
index f0bfacfdea80..efb1383b5218 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
@@ -431,21 +431,18 @@ free_pagelist(struct vchiq_pagelist_info *pagelistinfo,
if (head_bytes > actual)
head_bytes = actual;
- memcpy((char *)kmap(pages[0]) +
+ memcpy_to_page(pages[0],
pagelist->offset,
fragments,
head_bytes);
- kunmap(pages[0]);
}
if ((actual >= 0) && (head_bytes < actual) &&
- (tail_bytes != 0)) {
- memcpy((char *)kmap(pages[num_pages - 1]) +
- ((pagelist->offset + actual) &
- (PAGE_SIZE - 1) & ~(g_cache_line_size - 1)),
+ (tail_bytes != 0))
+ memcpy_to_page(pages[num_pages - 1],
+ (pagelist->offset + actual) &
+ (PAGE_SIZE - 1) & ~(g_cache_line_size - 1),
fragments + g_cache_line_size,
tail_bytes);
- kunmap(pages[num_pages - 1]);
- }
down(&g_free_fragments_mutex);
*(char **)fragments = g_free_fragments;
--
2.34.1
