From aab1c42a9d77fb3f243aaab7f9f7ca14a6ffa7d2 Mon Sep 17 00:00:00 2001 From: "Fabio M. De Francesco" Date: Wed, 13 Apr 2022 22:22:10 +0100 Subject: [PATCH] media: staging: media: atomisp: Use kmap_local_page() in hmm_set() The use of kmap() is being deprecated in favor of kmap_local_page() where it is feasible. In file pci/hmm/hmm.c, function hmm_set() calls kmap() / kunmap() where kmap_local_page() can instead do the mapping. With kmap_local_page(), the mapping is per thread, CPU local and not globally visible. Therefore, hmm_set()() is a function where the use of kmap_local_page() in place of kmap() is correctly suited. Convert the calls of kmap() / kunmap() to kmap_local_page() / kunmap_local(). Link: https://lore.kernel.org/linux-media/20220413212210.18494-1-fmdefrancesco@gmail.com Signed-off-by: Fabio M. De Francesco Reviewed-by: Ira Weiny Tested-by: Hans de Goede Signed-off-by: Mauro Carvalho Chehab --- 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 74cc388..2b015de 100644 --- a/drivers/staging/media/atomisp/pci/hmm/hmm.c +++ b/drivers/staging/media/atomisp/pci/hmm/hmm.c @@ -508,7 +508,7 @@ int hmm_set(ia_css_ptr virt, int c, unsigned int bytes) idx = (virt - bo->start) >> PAGE_SHIFT; offset = (virt - bo->start) - (idx << PAGE_SHIFT); - des = (char *)kmap(bo->pages[idx]) + offset; + des = (char *)kmap_local_page(bo->pages[idx]) + offset; if ((bytes + offset) >= PAGE_SIZE) { len = PAGE_SIZE - offset; @@ -524,7 +524,7 @@ int hmm_set(ia_css_ptr virt, int c, unsigned int bytes) clflush_cache_range(des, len); - kunmap(bo->pages[idx]); + kunmap_local(des); } return 0; -- 2.7.4