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Code Issues Releases Activity

Filter out BUS_DMASYNC_POSTWRITE sync operations, there is nothing for us

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to do on these.

Reported by:	wma
Obtained from:	ABT Systems Ltd
Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Andrew Turner 2016-05-20 12:38:48 +00:00
parent 1d4d43c0e7
commit 98670cad72
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=300299
1 changed files with 3 additions and 0 deletions
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3
sys/arm64/arm64/busdma_bounce.c
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@ -955,6 +955,9 @@ bounce_bus_dmamap_sync(bus_dma_tag_t dmat, bus_dmamap_t map,
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.