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From: Andrew Boyer <aboyer@averesystems.com>
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Date: Tue, 3 Jul 2012 09:47:46 -0400
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Cc: Sean Bruno <seanbru@yahoo-inc.com>
Subject: [patch] MFI should set bio_resid on command failure
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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().

-Andrew

Index: sys/dev/mfi/mfi_disk.c
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
--- sys/dev/mfi/mfi_disk.c	(revision 238071)
+++ sys/dev/mfi/mfi_disk.c	(working copy)
@@ -298,6 +298,7 @@
 	hdr =3D bio->bio_driver1;
=20
 	if (bio->bio_flags & BIO_ERROR) {
+		bio->bio_resid =3D bio->bio_bcount;
 		if (bio->bio_error =3D=3D 0)
 			bio->bio_error =3D EIO;
 		disk_err(bio, "hard error", -1, 1);

--------------------------------------------------
Andrew Boyer	aboyer@averesystems.com