Commit 2ad935a1 authored by Fabio M. De Francesco's avatar Fabio M. De Francesco Committed by Mauro Carvalho Chehab
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media: staging: media: atomisp: Convert kmap() to kmap_local_page() 

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: default avatarFabio M. De Francesco <fmdefrancesco@gmail.com>
Tested-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@kernel.org>
parent 5088bbde

drivers/staging/media/atomisp/pci/hmm/hmm.c

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