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[PATCH] s390: channel tape fixes

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Tape driver fixes:
 - Added deferred condition handling to tape driver core.
 - Added ability to handle busy conditions.
 - Code cleanup.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Stefan Bader
2005-07-27 11:45:04 -07:00
committed by Linus Torvalds
parent 6bb0e01081
commit 4111796d89
2 changed files with 182 additions and 126 deletions
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7
drivers/s390/char/tape.h
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@@ -3,10 +3,11 @@
* tape device driver for 3480/3490E/3590 tapes.
*
* S390 and zSeries version
* Copyright (C) 2001,2002 IBM Deutschland Entwicklung GmbH, IBM Corporation
* Copyright (C) 2001,2005 IBM Deutschland Entwicklung GmbH, IBM Corporation
* Author(s): Carsten Otte <cotte@de.ibm.com>
* Tuan Ngo-Anh <ngoanh@de.ibm.com>
* Martin Schwidefsky <schwidefsky@de.ibm.com>
* Stefan Bader <shbader@de.ibm.com>
*/
#ifndef _TAPE_H
@@ -111,6 +112,7 @@ enum tape_request_status {
TAPE_REQUEST_QUEUED, /* request is queued to be processed */
TAPE_REQUEST_IN_IO, /* request is currently in IO */
TAPE_REQUEST_DONE, /* request is completed. */
TAPE_REQUEST_CANCEL, /* request should be canceled. */
};
/* Tape CCW request */
@@ -237,6 +239,9 @@ struct tape_device {
/* Block dev frontend data */
struct tape_blk_data blk_data;
#endif
/* Function to start or stop the next request later. */
struct work_struct tape_dnr;
};
/* Externals from tape_core.c */