synclink series: Prepare for BKL pushdown

As these are quite complex I've simply pushed the BKL down into the ioctl
handler not tried to do anything neater.

Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Paul Fulghum <paulkf@microgate.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c
index fadab1d..1c9c440 100644 (file)
--- a/drivers/char/synclink.c
+++ b/drivers/char/synclink.c
@@ -2942,6 +2942,7 @@ static int mgsl_ioctl(struct tty_struct *tty, struct file * file,
                    unsigned int cmd, unsigned long arg)
 {
        struct mgsl_struct * info = (struct mgsl_struct *)tty->driver_data;
+       int ret;
        
        if (debug_level >= DEBUG_LEVEL_INFO)
                printk("%s(%d):mgsl_ioctl %s cmd=%08X\n", __FILE__,__LINE__,
@@ -2956,7 +2957,10 @@ static int mgsl_ioctl(struct tty_struct *tty, struct file * file,
                    return -EIO;
        }
 
-       return mgsl_ioctl_common(info, cmd, arg);
+       lock_kernel();
+       ret = mgsl_ioctl_common(info, cmd, arg);
+       unlock_kernel();
+       return ret;
 }
 
 static int mgsl_ioctl_common(struct mgsl_struct *info, unsigned int cmd, unsigned long arg)

diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c
index f3d8d72..6473ae0 100644 (file)
--- a/drivers/char/synclink_gt.c
+++ b/drivers/char/synclink_gt.c
@@ -1097,6 +1097,7 @@ static int ioctl(struct tty_struct *tty, struct file *file,
        struct serial_icounter_struct __user *p_cuser;  /* user space */
        unsigned long flags;
        void __user *argp = (void __user *)arg;
+       int ret;
 
        if (sanity_check(info, tty->name, "ioctl"))
                return -ENODEV;
@@ -1108,37 +1109,54 @@ static int ioctl(struct tty_struct *tty, struct file *file,
                    return -EIO;
        }
 
+       lock_kernel();
+
        switch (cmd) {
        case MGSL_IOCGPARAMS:
-               return get_params(info, argp);
+               ret = get_params(info, argp);
+               break;
        case MGSL_IOCSPARAMS:
-               return set_params(info, argp);
+               ret = set_params(info, argp);
+               break;
        case MGSL_IOCGTXIDLE:
-               return get_txidle(info, argp);
+               ret = get_txidle(info, argp);
+               break;
        case MGSL_IOCSTXIDLE:
-               return set_txidle(info, (int)arg);
+               ret = set_txidle(info, (int)arg);
+               break;
        case MGSL_IOCTXENABLE:
-               return tx_enable(info, (int)arg);
+               ret = tx_enable(info, (int)arg);
+               break;
        case MGSL_IOCRXENABLE:
-               return rx_enable(info, (int)arg);
+               ret = rx_enable(info, (int)arg);
+               break;
        case MGSL_IOCTXABORT:
-               return tx_abort(info);
+               ret = tx_abort(info);
+               break;
        case MGSL_IOCGSTATS:
-               return get_stats(info, argp);
+               ret = get_stats(info, argp);
+               break;
        case MGSL_IOCWAITEVENT:
-               return wait_mgsl_event(info, argp);
+               ret = wait_mgsl_event(info, argp);
+               break;
        case TIOCMIWAIT:
-               return modem_input_wait(info,(int)arg);
+               ret = modem_input_wait(info,(int)arg);
+               break;
        case MGSL_IOCGIF:
-               return get_interface(info, argp);
+               ret = get_interface(info, argp);
+               break;
        case MGSL_IOCSIF:
-               return set_interface(info,(int)arg);
+               ret = set_interface(info,(int)arg);
+               break;
        case MGSL_IOCSGPIO:
-               return set_gpio(info, argp);
+               ret = set_gpio(info, argp);
+               break;
        case MGSL_IOCGGPIO:
-               return get_gpio(info, argp);
+               ret = get_gpio(info, argp);
+               break;
        case MGSL_IOCWAITGPIO:
-               return wait_gpio(info, argp);
+               ret = wait_gpio(info, argp);
+               break;
        case TIOCGICOUNT:
                spin_lock_irqsave(&info->lock,flags);
                cnow = info->icount;
@@ -1155,12 +1173,14 @@ static int ioctl(struct tty_struct *tty, struct file *file,
                    put_user(cnow.parity, &p_cuser->parity) ||
                    put_user(cnow.brk, &p_cuser->brk) ||
                    put_user(cnow.buf_overrun, &p_cuser->buf_overrun))
-                       return -EFAULT;
-               return 0;
+                       ret = -EFAULT;
+               ret = 0;
+               break;
        default:
-               return -ENOIOCTLCMD;
+               ret = -ENOIOCTLCMD;
        }
-       return 0;
+       unlock_kernel();
+       return ret;
 }
 
 /*

diff --git a/drivers/char/synclinkmp.c b/drivers/char/synclinkmp.c
index e98c3e6..b716a73 100644 (file)
--- a/drivers/char/synclinkmp.c
+++ b/drivers/char/synclinkmp.c
@@ -1303,7 +1303,7 @@ static void tx_release(struct tty_struct *tty)
  *
  * Return Value:       0 if success, otherwise error code
  */
-static int ioctl(struct tty_struct *tty, struct file *file,
+static int do_ioctl(struct tty_struct *tty, struct file *file,
                 unsigned int cmd, unsigned long arg)
 {
        SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
@@ -1393,6 +1393,16 @@ static int ioctl(struct tty_struct *tty, struct file *file,
        return 0;
 }
 
+static int ioctl(struct tty_struct *tty, struct file *file,
+                unsigned int cmd, unsigned long arg)
+{
+       int ret;
+       lock_kernel();
+       ret = do_ioctl(tty, file, cmd, arg);
+       unlock_kernel();
+       return ret;
+}
+
 /*
  * /proc fs routines....
  */