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cma: fix alignment to PMD_SIZE for fixup region 

PMD_SIZE alignment is required to support
"linux,fixup-reserve-region", fix the same.

Change-Id: I67302a5dfd7738df93a63931b58b87686edb9a75
Signed-off-by: Shiraz Hashim <shashim@codeaurora.org>
This commit is contained in:
Shiraz Hashim 2015-06-18 14:35:41 +05:30
parent ef8c91250e
commit 819c8636fc
1 changed files with 6 additions and 4 deletions
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10
drivers/base/dma-contiguous.c
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@ -297,12 +297,14 @@ int __init cma_fdt_scan(unsigned long node, const char *uname,
remove =
of_get_flat_dt_prop(node, "linux,remove-completely", NULL) ? 1 : 0;
/* fixup demands base and size to be section aligned, if it doesn't
/* fixup demands base and size to be PMD_SIZE aligned, if it doesn't
* then reduce fixup to remove
*/
if (fixup) {
if (!IS_ALIGNED(base, SECTION_SIZE) ||
!IS_ALIGNED(size, SECTION_SIZE)) {
if (!IS_ALIGNED(base, PMD_SIZE) ||
!IS_ALIGNED(size, PMD_SIZE)) {
pr_info("fixup: fallback to remove region as base=%pa or size=%pa not aligned\n",
&base, &size);
fixup = 0;
remove = 1;
}
@ -456,7 +458,7 @@ int __init dma_contiguous_reserve_area(phys_addr_t size, phys_addr_t *res_base,
/* Sanitise input arguments */
if (fixup)
alignment = SECTION_SIZE;
alignment = PMD_SIZE;
else if (!remove)
alignment = PAGE_SIZE << max(MAX_ORDER - 1, pageblock_order);