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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2009-12-07 12:52:20 +0100
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2009-12-07 12:51:39 +0100
commit5cbb5f579e5b6f2e686880ffafa64e49323320c1 (patch)
treee3bea904f94a414dfedce42793c0f78acb008eb3 /drivers/s390/char
parentfeb5c5a450a5e56f3be09a18b541996c86bd94bc (diff)
[S390] 3270: remove BKL
Replace BLK use in fs3270 with mutex. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/char')
-rw-r--r--drivers/s390/char/fs3270.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/s390/char/fs3270.c b/drivers/s390/char/fs3270.c
index 097d3846a82..d449063c30f 100644
--- a/drivers/s390/char/fs3270.c
+++ b/drivers/s390/char/fs3270.c
@@ -38,6 +38,8 @@ struct fs3270 {
size_t rdbuf_size; /* size of data returned by RDBUF */
};
+static DEFINE_MUTEX(fs3270_mutex);
+
static void
fs3270_wake_up(struct raw3270_request *rq, void *data)
{
@@ -328,7 +330,7 @@ fs3270_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
if (!fp)
return -ENODEV;
rc = 0;
- lock_kernel();
+ mutex_lock(&fs3270_mutex);
switch (cmd) {
case TUBICMD:
fp->read_command = arg;
@@ -354,7 +356,7 @@ fs3270_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
rc = -EFAULT;
break;
}
- unlock_kernel();
+ mutex_unlock(&fs3270_mutex);
return rc;
}
@@ -437,7 +439,7 @@ fs3270_open(struct inode *inode, struct file *filp)
minor = tty->index + RAW3270_FIRSTMINOR;
tty_kref_put(tty);
}
- lock_kernel();
+ mutex_lock(&fs3270_mutex);
/* Check if some other program is already using fullscreen mode. */
fp = (struct fs3270 *) raw3270_find_view(&fs3270_fn, minor);
if (!IS_ERR(fp)) {
@@ -478,7 +480,7 @@ fs3270_open(struct inode *inode, struct file *filp)
}
filp->private_data = fp;
out:
- unlock_kernel();
+ mutex_unlock(&fs3270_mutex);
return rc;
}