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media: staging: media: atomisp: Convert kmap() to kmap_local_page()

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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().

Link: https://lore.kernel.org/linux-media/20220408223129.3844-1-fmdefrancesco@gmail.com
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Fabio M. De Francesco 2022-04-08 23:31:29 +01:00 committed by Mauro Carvalho Chehab
parent 5088bbde3a
commit 2ad935a15f
1 changed files with 2 additions and 2 deletions
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4
drivers/staging/media/atomisp/pci/hmm/hmm.c
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@ -295,7 +295,7 @@ 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->pages[idx]) + offset;
src = (char *)kmap_local_page(bo->pages[idx]) + offset;
if ((bytes + offset) >= PAGE_SIZE) {
len = PAGE_SIZE - offset;
@ -314,7 +314,7 @@ static int load_and_flush_by_kmap(ia_css_ptr virt, void *data,
clflush_cache_range(src, len);
kunmap(bo->pages[idx]);
kunmap_local(src);
}
return 0;