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author | Greg Kroah-Hartman | 2018-02-26 15:32:00 +0100 |
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committer | Greg Kroah-Hartman | 2018-02-26 15:32:00 +0100 |
commit | 36e9f7203e05090031a5356be043a9be342e383c (patch) | |
tree | 27877737c3bb3c00ee9caeece7d671f65cf91252 /drivers/staging/android/ion | |
parent | staging: speakup: remove space after a cast (diff) | |
parent | Linux 4.16-rc3 (diff) | |
download | kernel-qcow2-linux-36e9f7203e05090031a5356be043a9be342e383c.tar.gz kernel-qcow2-linux-36e9f7203e05090031a5356be043a9be342e383c.tar.xz kernel-qcow2-linux-36e9f7203e05090031a5356be043a9be342e383c.zip |
Merge 4.16-rc3 into staging-next
We want the IIO/Staging fixes in here, and to resolve a merge problem
with the move of the fsl-mc code.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/android/ion')
-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; |