lguest: remove obsolete LHREQ_BREAK call

[sfrench/cifs-2.6.git] / drivers / lguest / lguest_user.c

diff --git a/drivers/lguest/lguest_user.c b/drivers/lguest/lguest_user.c
index f6bf255f183730eccf4f00065e3673d8db6119ac..32e297121058a3d7dc52fbd6d347eab496c08252 100644 (file)
--- a/drivers/lguest/lguest_user.c
+++ b/drivers/lguest/lguest_user.c
@@ -11,32 +11,6 @@
 #include <linux/file.h>
 #include "lg.h"
 
-/*L:055 When something happens, the Waker process needs a way to stop the
- * kernel running the Guest and return to the Launcher.  So the Waker writes
- * LHREQ_BREAK and the value "1" to /dev/lguest to do this.  Once the Launcher
- * has done whatever needs attention, it writes LHREQ_BREAK and "0" to release
- * the Waker. */
-static int break_guest_out(struct lg_cpu *cpu, const unsigned long __user*input)
-{
-       unsigned long on;
-
-       /* Fetch whether they're turning break on or off. */
-       if (get_user(on, input) != 0)
-               return -EFAULT;
-
-       if (on) {
-               cpu->break_out = 1;
-               if (!wake_up_process(cpu->tsk))
-                       kick_process(cpu->tsk);
-               /* Wait for them to reset it */
-               return wait_event_interruptible(cpu->break_wq, !cpu->break_out);
-       } else {
-               cpu->break_out = 0;
-               wake_up(&cpu->break_wq);
-               return 0;
-       }
-}
-
 bool send_notify_to_eventfd(struct lg_cpu *cpu)
 {
        unsigned int i;
@@ -202,9 +176,6 @@ static int lg_cpu_start(struct lg_cpu *cpu, unsigned id, unsigned long start_ip)
         * address. */
        lguest_arch_setup_regs(cpu, start_ip);
 
-       /* Initialize the queue for the Waker to wait on */
-       init_waitqueue_head(&cpu->break_wq);
-
        /* We keep a pointer to the Launcher task (ie. current task) for when
         * other Guests want to wake this one (eg. console input). */
        cpu->tsk = current;
@@ -344,8 +315,6 @@ static ssize_t write(struct file *file, const char __user *in,
                return initialize(file, input);
        case LHREQ_IRQ:
                return user_send_irq(cpu, input);
-       case LHREQ_BREAK:
-               return break_guest_out(cpu, input);
        case LHREQ_EVENTFD:
                return attach_eventfd(lg, input);
        default: