diff options
author | Sean Paul <seanpaul@chromium.org> | 2018-03-30 19:35:45 +0300 |
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committer | Sean Paul <seanpaul@chromium.org> | 2018-03-30 19:35:45 +0300 |
commit | 83fd26c3f32afe38bb2ab8cc00e313ec5c2edbce (patch) | |
tree | b2d2719c998bc2bcba99f2ecf2d164ee9b7ad75a /drivers/staging/android/ion/ion_cma_heap.c | |
parent | 4165791d29f64e01860a064f3c649447dbac41c3 (diff) | |
parent | 694f54f680f7fd8e9561928fbfc537d9afbc3d79 (diff) | |
download | linux-83fd26c3f32afe38bb2ab8cc00e313ec5c2edbce.tar.xz |
Merge airlied/drm-next into drm-misc-next
Backmerging to pick up a fix from drm-misc-next-fixes.
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Diffstat (limited to 'drivers/staging/android/ion/ion_cma_heap.c')
-rw-r--r-- | drivers/staging/android/ion/ion_cma_heap.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/staging/android/ion/ion_cma_heap.c b/drivers/staging/android/ion/ion_cma_heap.c index 94e06925c712..49718c96bf9e 100644 --- a/drivers/staging/android/ion/ion_cma_heap.c +++ b/drivers/staging/android/ion/ion_cma_heap.c @@ -12,6 +12,7 @@ #include <linux/err.h> #include <linux/cma.h> #include <linux/scatterlist.h> +#include <linux/highmem.h> #include "ion.h" @@ -42,6 +43,22 @@ static int ion_cma_allocate(struct ion_heap *heap, struct ion_buffer *buffer, if (!pages) return -ENOMEM; + if (PageHighMem(pages)) { + unsigned long nr_clear_pages = nr_pages; + struct page *page = pages; + + while (nr_clear_pages > 0) { + void *vaddr = kmap_atomic(page); + + memset(vaddr, 0, PAGE_SIZE); + kunmap_atomic(vaddr); + page++; + nr_clear_pages--; + } + } else { + memset(page_address(pages), 0, size); + } + table = kmalloc(sizeof(*table), GFP_KERNEL); if (!table) goto err; |