Author: andrew
Date: Fri May 20 12:38:48 2016
New Revision: 300299
URL: https://svnweb.freebsd.org/changeset/base/300299
Log:
Filter out BUS_DMASYNC_POSTWRITE sync operations, there is nothing for us
to do on these.
Reported by: wma
Obtained from: ABT Systems Ltd
Sponsored by: The FreeBSD Foundation
Modified:
head/sys/arm64/arm64/busdma_bounce.c
Modified: head/sys/arm64/arm64/busdma_bounce.c
==============================================================================
--- head/sys/arm64/arm64/busdma_bounce.c Fri May 20 12:17:40 2016
(r300298)
+++ head/sys/arm64/arm64/busdma_bounce.c Fri May 20 12:38:48 2016
(r300299)
@@ -955,6 +955,9 @@ bounce_bus_dmamap_sync(bus_dma_tag_t dma
struct sync_list *sl, *end;
vm_offset_t datavaddr, tempvaddr;
+ if (op == BUS_DMASYNC_POSTWRITE)
+ return;
+
if ((op & BUS_DMASYNC_POSTREAD) != 0) {
/*
* Wait for any DMA operations to complete before the bcopy.
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