svn commit: r238371 - head/sys/dev/mfi

[Sean Bruno]

Author: sbruno
Date: Wed Jul 11 18:16:54 2012
New Revision: 238371
URL: http://svn.freebsd.org/changeset/base/238371

Log:
  When an MFI command fails, the driver needs to set bio->bio_resid so that
  the upper levels notice.  Otherwise we see commands silently failing leading
  to data corruption.  This mirrors dadone()
  
  Submitted by:	Andrew Boyer aboyer at averesystems.com
  Reviewed by:	scottl at freebsd.org
  MFC after:	2 weeks

Modified:
  head/sys/dev/mfi/mfi_disk.c

Modified: head/sys/dev/mfi/mfi_disk.c
==============================================================================
--- head/sys/dev/mfi/mfi_disk.c	Wed Jul 11 17:11:54 2012	(r238370)
+++ head/sys/dev/mfi/mfi_disk.c	Wed Jul 11 18:16:54 2012	(r238371)
@@ -298,6 +298,7 @@ mfi_disk_complete(struct bio *bio)
 	hdr = bio->bio_driver1;
 
 	if (bio->bio_flags & BIO_ERROR) {
+		bio->bio_resid = bio->bio_bcount;
 		if (bio->bio_error == 0)
 			bio->bio_error = EIO;
 		disk_err(bio, "hard error", -1, 1);