Author: ian
Date: Tue Jul 29 02:36:09 2014
New Revision: 269210
URL: http://svnweb.freebsd.org/changeset/base/269210
Log:
Propagate any alignment restriction from the parent tag to a new tag,
keeping the more restrictive of the two values.
Reviewed by: cognet
Modified:
head/sys/arm/arm/busdma_machdep-v6.c
Modified: head/sys/arm/arm/busdma_machdep-v6.c
==============================================================================
--- head/sys/arm/arm/busdma_machdep-v6.c Tue Jul 29 02:36:02 2014
(r269209)
+++ head/sys/arm/arm/busdma_machdep-v6.c Tue Jul 29 02:36:09 2014
(r269210)
@@ -446,6 +446,7 @@ bus_dma_tag_create(bus_dma_tag_t parent,
if (parent != NULL) {
newtag->lowaddr = MIN(parent->lowaddr, newtag->lowaddr);
newtag->highaddr = MAX(parent->highaddr, newtag->highaddr);
+ newtag->alignment = MAX(parent->alignment, newtag->alignment);
newtag->flags |= parent->flags & BUS_DMA_COULD_BOUNCE;
if (newtag->boundary == 0)
newtag->boundary = parent->boundary;
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