Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4925c7e22293dbf2b85351e8c2323ad8282396b3
Commit: 4925c7e22293dbf2b85351e8c2323ad8282396b3
Parent: 9c9c17613a78545a4a93b1370924f62eb282c903
Author: Michael Holzheu <[EMAIL PROTECTED]>
AuthorDate: Mon Mar 5 23:35:47 2007 +0100
Committer: Martin Schwidefsky <[EMAIL PROTECTED]>
CommitDate: Mon Mar 5 23:35:47 2007 +0100
[S390] tape: Compression overwrites crypto setting
After switching compression on/off with the mt command, tape encryption is
no
longer working. The reason for that is, that the modeset_byte is set to
the compression value instead of using bitwise and/or bit operations to
enable/disable the corresponding bit.
Signed-off-by: Michael Holzheu <[EMAIL PROTECTED]>
Signed-off-by: Martin Schwidefsky <[EMAIL PROTECTED]>
---
drivers/s390/char/tape_std.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/drivers/s390/char/tape_std.c b/drivers/s390/char/tape_std.c
index 7a76ec4..2a1af4e 100644
--- a/drivers/s390/char/tape_std.c
+++ b/drivers/s390/char/tape_std.c
@@ -647,7 +647,10 @@ tape_std_mtcompression(struct tape_device *device, int
mt_count)
return PTR_ERR(request);
request->op = TO_NOP;
/* setup ccws */
- *device->modeset_byte = (mt_count == 0) ? 0x00 : 0x08;
+ if (mt_count == 0)
+ *device->modeset_byte &= ~0x08;
+ else
+ *device->modeset_byte |= 0x08;
tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);
tape_ccw_end(request->cpaddr + 1, NOP, 0, NULL);
/* execute it */
-
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