svn commit: r277510 - head/sys/dev/firewire

[Will Andrews]

Author: will
Date: Wed Jan 21 20:06:25 2015
New Revision: 277510
URL: https://svnweb.freebsd.org/changeset/base/277510

Log:
  Fix firewire panic when issuing a reply to an unhandled
  asynchronous remote dma request (DMA request that the
  hardware cannot automatically handle).
  
  sys/dev/firewire/firewire.c
  	In fw_rcv(), add missing early return in the error
  	path for DMA requests to unregistered regions.
  
  Submitted by:	gibbs
  MFC after:	1 week
  Sponsored by:	Spectra Logic
  MFSpectraBSD:	1110993 on 2015/01/06

Modified:
  head/sys/dev/firewire/firewire.c

Modified: head/sys/dev/firewire/firewire.c
==============================================================================
--- head/sys/dev/firewire/firewire.c	Wed Jan 21 20:05:10 2015	(r277509)
+++ head/sys/dev/firewire/firewire.c	Wed Jan 21 20:06:25 2015	(r277510)
@@ -2030,6 +2030,7 @@ fw_rcv(struct fw_rcv_buf *rb)
 			rb->xfer->hand = fw_xfer_free;
 			if (fw_asyreq(rb->fc, -1, rb->xfer))
 				fw_xfer_free(rb->xfer);
+			return;
 		}
 		len = 0;
 		for (i = 0; i < rb->nvec; i++)