Author: andrew
Date: Thu Sep 24 10:40:49 2020
New Revision: 366110
URL: https://svnweb.freebsd.org/changeset/base/366110
Log:
Ensure arm64 DMA alignment is passed from parents to children
This ensures the alignment check will take these alignments into account.
Sponsored by: Innovate UK
Modified:
head/sys/arm64/arm64/busdma_machdep.c
Modified: head/sys/arm64/arm64/busdma_machdep.c
==============================================================================
--- head/sys/arm64/arm64/busdma_machdep.c Thu Sep 24 09:06:04 2020
(r366109)
+++ head/sys/arm64/arm64/busdma_machdep.c Thu Sep 24 10:40:49 2020
(r366110)
@@ -167,6 +167,7 @@ common_bus_dma_tag_create(struct bus_dma_tag_common *p
common->impl = parent->impl;
common->lowaddr = MIN(parent->lowaddr, common->lowaddr);
common->highaddr = MAX(parent->highaddr, common->highaddr);
+ common->alignment = MAX(parent->alignment, common->alignment);
if (common->boundary == 0)
common->boundary = parent->boundary;
else if (parent->boundary != 0) {
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