Date: Wed, 30 Jul 2003 22:34:20 -0700 (PDT) From: Scott Long <scottl@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/i386/i386 busdma_machdep.c Message-ID: <200307310534.h6V5YK4B017415@repoman.freebsd.org>
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scottl 2003/07/30 22:34:20 PDT
FreeBSD src repository
Modified files:
sys/i386/i386 busdma_machdep.c
Log:
Allocate the S/G list in the tag, not on the stack. The enforces the rule
that while many maps can exist and be loaded per tag, bus_dmamap_load() and
friends can only be called on one map at a time from the tag. This is
enforced via the mutex arguments in the tag.
Fixing this bug means that s/g lists can be arbitrarily long in length, and
also removes an ugly GNU-ism from the code. No API or ABI change is
incurred. Similar changes for other platforms is forthcoming.
Revision Changes Path
1.53 +32 -27 src/sys/i386/i386/busdma_machdep.c
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