From a18992d4652553f65469ac72b54b7fdd4f058277 Mon Sep 17 00:00:00 2001
From: Alan Cox <alan@redhat.com>
Date: Mon, 13 Oct 2008 10:46:09 +0100
Subject: [PATCH] fs3270: Correct error returns
Drop the kernel lock further and also correct cases where we set rc to an
error code, and then return 0
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
drivers/s390/char/fs3270.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/drivers/s390/char/fs3270.c b/drivers/s390/char/fs3270.c
index 1227f4591f8d..40759c33477d 100644
--- a/drivers/s390/char/fs3270.c
+++ b/drivers/s390/char/fs3270.c
@@ -418,23 +418,22 @@ fs3270_open(struct inode *inode, struct file *filp)
{
struct fs3270 *fp;
struct idal_buffer *ib;
- int minor, rc;
+ int minor, rc = 0;
if (imajor(filp->f_path.dentry->d_inode) != IBM_FS3270_MAJOR)
return -ENODEV;
- lock_kernel();
minor = iminor(filp->f_path.dentry->d_inode);
/* Check for minor 0 multiplexer. */
if (minor == 0) {
struct tty_struct *tty = get_current_tty();
if (!tty || tty->driver->major != IBM_TTY3270_MAJOR) {
tty_kref_put(tty);
- rc = -ENODEV;
- goto out;
+ return -ENODEV;
}
minor = tty->index + RAW3270_FIRSTMINOR;
tty_kref_put(tty);
}
+ lock_kernel();
/* Check if some other program is already using fullscreen mode. */
fp = (struct fs3270 *) raw3270_find_view(&fs3270_fn, minor);
if (!IS_ERR(fp)) {
@@ -476,7 +475,7 @@ fs3270_open(struct inode *inode, struct file *filp)
filp->private_data = fp;
out:
unlock_kernel();
- return 0;
+ return rc;
}
/*
--
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