From 1543e317f1da31b75942316931e8f491a8920811 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Thu, 04 Jan 2024 10:08:02 +0000
Subject: [PATCH] disable FB
---
kernel/drivers/s390/char/tape_char.c | 43 ++++++++++++++++---------------------------
1 files changed, 16 insertions(+), 27 deletions(-)
diff --git a/kernel/drivers/s390/char/tape_char.c b/kernel/drivers/s390/char/tape_char.c
index fc206c9..8abb429 100644
--- a/kernel/drivers/s390/char/tape_char.c
+++ b/kernel/drivers/s390/char/tape_char.c
@@ -290,7 +290,7 @@
rc = tape_open(device);
if (rc == 0) {
filp->private_data = device;
- nonseekable_open(inode, filp);
+ stream_open(inode, filp);
} else
tape_put_device(device);
@@ -341,14 +341,14 @@
*/
static int
__tapechar_ioctl(struct tape_device *device,
- unsigned int no, unsigned long data)
+ unsigned int no, void __user *data)
{
int rc;
if (no == MTIOCTOP) {
struct mtop op;
- if (copy_from_user(&op, (char __user *) data, sizeof(op)) != 0)
+ if (copy_from_user(&op, data, sizeof(op)) != 0)
return -EFAULT;
if (op.mt_count < 0)
return -EINVAL;
@@ -392,9 +392,7 @@
if (rc < 0)
return rc;
pos.mt_blkno = rc;
- if (copy_to_user((char __user *) data, &pos, sizeof(pos)) != 0)
- return -EFAULT;
- return 0;
+ return put_user_mtpos(data, &pos);
}
if (no == MTIOCGET) {
/* MTIOCGET: query the tape drive status. */
@@ -424,15 +422,12 @@
get.mt_blkno = rc;
}
- if (copy_to_user((char __user *) data, &get, sizeof(get)) != 0)
- return -EFAULT;
-
- return 0;
+ return put_user_mtget(data, &get);
}
/* Try the discipline ioctl function. */
if (device->discipline->ioctl_fn == NULL)
return -EINVAL;
- return device->discipline->ioctl_fn(device, no, data);
+ return device->discipline->ioctl_fn(device, no, (unsigned long)data);
}
static long
@@ -445,7 +440,7 @@
device = (struct tape_device *) filp->private_data;
mutex_lock(&device->mutex);
- rc = __tapechar_ioctl(device, no, data);
+ rc = __tapechar_ioctl(device, no, (void __user *)data);
mutex_unlock(&device->mutex);
return rc;
}
@@ -455,23 +450,17 @@
tapechar_compat_ioctl(struct file *filp, unsigned int no, unsigned long data)
{
struct tape_device *device = filp->private_data;
- int rval = -ENOIOCTLCMD;
- unsigned long argp;
+ long rc;
- /* The 'arg' argument of any ioctl function may only be used for
- * pointers because of the compat pointer conversion.
- * Consider this when adding new ioctls.
- */
- argp = (unsigned long) compat_ptr(data);
- if (device->discipline->ioctl_fn) {
- mutex_lock(&device->mutex);
- rval = device->discipline->ioctl_fn(device, no, argp);
- mutex_unlock(&device->mutex);
- if (rval == -EINVAL)
- rval = -ENOIOCTLCMD;
- }
+ if (no == MTIOCPOS32)
+ no = MTIOCPOS;
+ else if (no == MTIOCGET32)
+ no = MTIOCGET;
- return rval;
+ mutex_lock(&device->mutex);
+ rc = __tapechar_ioctl(device, no, compat_ptr(data));
+ mutex_unlock(&device->mutex);
+ return rc;
}
#endif /* CONFIG_COMPAT */
--
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