Date: Mon, 11 Jul 2016 14:50:14 -0600 From: Ian Lepore <ian@freebsd.org> To: Jared McNeill <jmcneill@FreeBSD.org>, src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r302592 - head/sys/arm/allwinner Message-ID: <1468270214.72182.126.camel@freebsd.org> In-Reply-To: <201607112014.u6BKEpbH057588@repo.freebsd.org> References: <201607112014.u6BKEpbH057588@repo.freebsd.org>
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On Mon, 2016-07-11 at 20:14 +0000, Jared McNeill wrote: > Author: jmcneill > Date: Mon Jul 11 20:14:50 2016 > New Revision: 302592 > URL: https://svnweb.freebsd.org/changeset/base/302592 > > Log: > Return early from bus_dmamap_load callback if the error indicator > is set. > > Reviewed by: andrew, manu > > Modified: > head/sys/arm/allwinner/a10_mmc.c > > Modified: head/sys/arm/allwinner/a10_mmc.c > ===================================================================== > ========= > --- head/sys/arm/allwinner/a10_mmc.c Mon Jul 11 20:13:46 2016 > (r302591) > +++ head/sys/arm/allwinner/a10_mmc.c Mon Jul 11 20:14:50 2016 > (r302592) > @@ -364,6 +364,10 @@ a10_dma_cb(void *arg, bus_dma_segment_t > > sc = (struct a10_mmc_softc *)arg; > sc->a10_dma_map_err = err; > + > + if (err) > + return; > + > dma_desc = sc->a10_dma_desc; > /* Note nsegs is guaranteed to be zero if err is non-zero. > */ > for (i = 0; i < nsegs; i++) { > The comment about nsegs g'teed to be zero is now rather moot. That comment may have been copied from code I wrote long ago. I think the comment is true of the armv4/6 implementations, but it doesn't appear to be a g'tee made by the busdma manpage. -- Ian
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