[PATCH 1/2] SCSI Tape: Move buffer pointer back when data could not be written.

[Kai Makisara <Kai.Makisara@xxxxxxxxxxx>]

Move buffer pointer back when data could not be written. Bug found by Mike Christie.

Signed-off-by: Kai Mäkisara <Kai.Makisara@xxxxxxxxxxx>
---
The patch is for 2.6.27 (against 2.6.26-rc9).

 drivers/scsi/st.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index 6e5a5bb..ccaf1ac 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -17,7 +17,7 @@
    Last modified: 18-JAN-1998 Richard Gooch <rgooch@xxxxxxxxxxxxx> Devfs support
  */
 
-static const char *verstr = "20080224";
+static const char *verstr = "20080504";
 
 #include <linux/module.h>
 
@@ -1663,6 +1663,7 @@ st_write(struct file *filp, const char __user *buf, size_t count, loff_t * ppos)
 				if (undone <= do_count) {
 					/* Only data from this write is not written */
 					count += undone;
+					b_point -= undone;
 					do_count -= undone;
 					if (STp->block_size)
 						blks = (transfer - undone) / STp->block_size;
-- 
1.5.4.3