Re: port-arm/49145: readonly mbuf is not writebacked by _bus_dmamap_sync_segment() nor sosend_loan()

To: gnats-bugs%NetBSD.org@localhost
Subject: Re: port-arm/49145: readonly mbuf is not writebacked by _bus_dmamap_sync_segment() nor sosend_loan()
From: Ryo Shimizu <ryo%nerv.org@localhost>
Date: Sun, 24 Aug 2014 18:05:16 +0900

> If this is a readonly mbuf, then =
> BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE
> is invalid for it.  If it's readonly, it shouldn't be written to!!!=

oh...exactly right!
Sorry I have used bus_dmamap_sync with BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE.
It works fine with BUS_DMASYNC_PREWRITE.

There was no problem. Please close this PR.

--
ryo shimizu

References:
- Re: port-arm/49145: readonly mbuf is not writebacked by _bus_dmamap_sync_segment() nor sosend_loan()
  - From: Matt Thomas

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