1 files changed, 12 insertions, 9 deletions

diff --git a/arch/i386/kernel/vm86.c b/arch/i386/kernel/vm86.c
index 2f3d52dacff7..ec0f68ce6886 100644
--- a/arch/i386/kernel/vm86.c
+++ b/arch/i386/kernel/vm86.c
@@ -222,7 +222,7 @@ asmlinkage int sys_vm86(struct pt_regs regs)
                         goto out;
                 case VM86_PLUS_INSTALL_CHECK:
                         /* NOTE: on old vm86 stuff this will return the error
-                           from verify_area(), because the subfunction is
+                           from access_ok(), because the subfunction is
                            interpreted as (invalid) address to vm86_struct.
                            So the installation check works.
                          */
@@ -294,8 +294,8 @@ static void do_sys_vm86(struct kernel_vm86_struct *info, struct task_struct *tsk
  */
         info->regs32->eax = 0;
         tsk->thread.saved_esp0 = tsk->thread.esp0;
-        asm volatile("movl %%fs,%0":"=m" (tsk->thread.saved_fs));
-        asm volatile("movl %%gs,%0":"=m" (tsk->thread.saved_gs));
+        asm volatile("mov %%fs,%0":"=m" (tsk->thread.saved_fs));
+        asm volatile("mov %%gs,%0":"=m" (tsk->thread.saved_gs));
 
         tss = &per_cpu(init_tss, get_cpu());
         tsk->thread.esp0 = (unsigned long) &info->VM86_TSS_ESP0;
@@ -717,12 +717,12 @@ static irqreturn_t irq_handler(int intno, void *dev_id, struct pt_regs * regs)
         irqbits |= irq_bit;
         if (vm86_irqs[intno].sig)
                 send_sig(vm86_irqs[intno].sig, vm86_irqs[intno].tsk, 1);
-        spin_unlock_irqrestore(&irqbits_lock, flags);
         /*
          * IRQ will be re-enabled when user asks for the irq (whether
          * polling or as a result of the signal)
          */
-        disable_irq(intno);
+        disable_irq_nosync(intno);
+        spin_unlock_irqrestore(&irqbits_lock, flags);
         return IRQ_HANDLED;
 
 out:
@@ -754,17 +754,20 @@ static inline int get_and_reset_irq(int irqnumber)
 {
         int bit;
         unsigned long flags;
+        int ret = 0;
         
         if (invalid_vm86_irq(irqnumber)) return 0;
         if (vm86_irqs[irqnumber].tsk != current) return 0;
         spin_lock_irqsave(&irqbits_lock, flags);        
         bit = irqbits & (1 << irqnumber);
         irqbits &= ~bit;
+        if (bit) {
+                enable_irq(irqnumber);
+                ret = 1;
+        }
+
         spin_unlock_irqrestore(&irqbits_lock, flags);   
-        if (!bit)
-                return 0;
-        enable_irq(irqnumber);
-        return 1;
+        return ret;
 }