Commit 20b105fe authored Dec 04, 2018 by Christoph Hellwig

dma-mapping: remove a pointless memset in dma_atomic_pool_init



We already zero the memory after allocating it from the pool that
this function fills, and having the memset here in this form means
we can't support CMA highmem allocations.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Russell King - ARM Linux <linux@armlinux.org.uk>

parent 48cc8f7a

kernel/dma/remap.c

+0 −1

Original line number	Diff line number	Diff line
		@@ -121,7 +121,6 @@ int __init dma_atomic_pool_init(gfp_t gfp, pgprot_t prot)
		if (!page)
		goto out;

		memset(page_address(page), 0, atomic_pool_size);
		arch_dma_prep_coherent(page, atomic_pool_size);

		atomic_pool = gen_pool_create(PAGE_SHIFT, -1);