From 6b9279721a068b44cac0e175b8e89355d6a3a964 Mon Sep 17 00:00:00 2001
From: Mark Harvey<markh794@xxxxxxxxx>
Date: Sat, 9 Apr 2011 05:46:29 +1000
Subject: Handle Incorrect Length Indicator in sg backing store
If ILI sense bit set, return available data.
Tested-by: James Pattinson<james@xxxxxxxxxxxxx>
Signed-off-by: Mark Harvey<markh794@xxxxxxxxx>
---
usr/bs_sg.c | 10 ++++++++--
1 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/usr/bs_sg.c b/usr/bs_sg.c
index 69cce9b..10af39a 100644
--- a/usr/bs_sg.c
+++ b/usr/bs_sg.c
@@ -247,6 +247,7 @@ static void bs_sg_cmd_complete(int fd, int events, void *data)
struct sg_io_hdr io_hdr;
struct scsi_cmd *cmd;
int err;
+ unsigned resid;
memset(&io_hdr, 0, sizeof(io_hdr));
io_hdr.interface_id = 'S';
@@ -261,9 +262,14 @@ static void bs_sg_cmd_complete(int fd, int events, void *data)
scsi_set_out_resid(cmd, io_hdr.resid);
scsi_set_in_resid(cmd, io_hdr.resid);
} else {
+ if (io_hdr.sbp[2] == 0x20) /* Incorrect Length Indicator set */
+ resid = io_hdr.dxfer_len - io_hdr.resid;
+ else
+ resid = 0;
+
cmd->sense_len = io_hdr.sb_len_wr;
- scsi_set_out_resid_by_actual(cmd, 0);
- scsi_set_in_resid_by_actual(cmd, 0);
+ scsi_set_out_resid_by_actual(cmd, resid);
+ scsi_set_in_resid_by_actual(cmd, resid);
}
cmd->scsi_cmd_done(cmd, io_hdr.status);
--
1.7.0.4
Cheers
Mark
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