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Diffstat (limited to 'drivers/s390/char/tape_char.c')
-rw-r--r--drivers/s390/char/tape_char.c27
1 files changed, 6 insertions, 21 deletions
diff --git a/drivers/s390/char/tape_char.c b/drivers/s390/char/tape_char.c
index 31198c8f2718..9faea04e11e9 100644
--- a/drivers/s390/char/tape_char.c
+++ b/drivers/s390/char/tape_char.c
@@ -3,7 +3,7 @@
3 * character device frontend for tape device driver 3 * character device frontend for tape device driver
4 * 4 *
5 * S390 and zSeries version 5 * S390 and zSeries version
6 * Copyright (C) 2001,2002 IBM Deutschland Entwicklung GmbH, IBM Corporation 6 * Copyright IBM Corp. 2001,2006
7 * Author(s): Carsten Otte <cotte@de.ibm.com> 7 * Author(s): Carsten Otte <cotte@de.ibm.com>
8 * Michael Holzheu <holzheu@de.ibm.com> 8 * Michael Holzheu <holzheu@de.ibm.com>
9 * Tuan Ngo-Anh <ngoanh@de.ibm.com> 9 * Tuan Ngo-Anh <ngoanh@de.ibm.com>
@@ -89,22 +89,7 @@ tapechar_cleanup_device(struct tape_device *device)
89 device->nt = NULL; 89 device->nt = NULL;
90} 90}
91 91
92/* 92static int
93 * Terminate write command (we write two TMs and skip backward over last)
94 * This ensures that the tape is always correctly terminated.
95 * When the user writes afterwards a new file, he will overwrite the
96 * second TM and therefore one TM will remain to separate the
97 * two files on the tape...
98 */
99static inline void
100tapechar_terminate_write(struct tape_device *device)
101{
102 if (tape_mtop(device, MTWEOF, 1) == 0 &&
103 tape_mtop(device, MTWEOF, 1) == 0)
104 tape_mtop(device, MTBSR, 1);
105}
106
107static inline int
108tapechar_check_idalbuffer(struct tape_device *device, size_t block_size) 93tapechar_check_idalbuffer(struct tape_device *device, size_t block_size)
109{ 94{
110 struct idal_buffer *new; 95 struct idal_buffer *new;
@@ -137,7 +122,7 @@ tapechar_check_idalbuffer(struct tape_device *device, size_t block_size)
137/* 122/*
138 * Tape device read function 123 * Tape device read function
139 */ 124 */
140ssize_t 125static ssize_t
141tapechar_read(struct file *filp, char __user *data, size_t count, loff_t *ppos) 126tapechar_read(struct file *filp, char __user *data, size_t count, loff_t *ppos)
142{ 127{
143 struct tape_device *device; 128 struct tape_device *device;
@@ -201,7 +186,7 @@ tapechar_read(struct file *filp, char __user *data, size_t count, loff_t *ppos)
201/* 186/*
202 * Tape device write function 187 * Tape device write function
203 */ 188 */
204ssize_t 189static ssize_t
205tapechar_write(struct file *filp, const char __user *data, size_t count, loff_t *ppos) 190tapechar_write(struct file *filp, const char __user *data, size_t count, loff_t *ppos)
206{ 191{
207 struct tape_device *device; 192 struct tape_device *device;
@@ -291,7 +276,7 @@ tapechar_write(struct file *filp, const char __user *data, size_t count, loff_t
291/* 276/*
292 * Character frontend tape device open function. 277 * Character frontend tape device open function.
293 */ 278 */
294int 279static int
295tapechar_open (struct inode *inode, struct file *filp) 280tapechar_open (struct inode *inode, struct file *filp)
296{ 281{
297 struct tape_device *device; 282 struct tape_device *device;
@@ -326,7 +311,7 @@ tapechar_open (struct inode *inode, struct file *filp)
326 * Character frontend tape device release function. 311 * Character frontend tape device release function.
327 */ 312 */
328 313
329int 314static int
330tapechar_release(struct inode *inode, struct file *filp) 315tapechar_release(struct inode *inode, struct file *filp)
331{ 316{
332 struct tape_device *device; 317 struct tape_device *device;