---

yaml --- r: 177359 b: refs/heads/master c: 27f5955 h: refs/heads/master i: 177357: 09b4450 177355: f70361f 177351: a9b79c9 177343: 5efb123 v: v3
git-mirror · Dec 10, 2009 · edff3dd · edff3dd
1 parent 665d5a5
commit edff3dd
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Showing 4 changed files with 8 additions and 30 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: e258e4e0b495e6ecbd073d6bef1eafb62a58919a
+refs/heads/master: 27f59559d63375a4d59e7c720a439d9f0b47edad
diff --git a/trunk/arch/x86/include/asm/syscalls.h b/trunk/arch/x86/include/asm/syscalls.h
@@ -18,6 +18,7 @@
 /* Common in X86_32 and X86_64 */
 /* kernel/ioport.c */
 asmlinkage long sys_ioperm(unsigned long, unsigned long, int);
+long sys_iopl(unsigned int, struct pt_regs *);
 
 /* kernel/process.c */
 int sys_fork(struct pt_regs *);
@@ -35,8 +36,6 @@ asmlinkage int sys_get_thread_area(struct user_desc __user *);
 
 /* X86_32 only */
 #ifdef CONFIG_X86_32
-/* kernel/ioport.c */
-long sys_iopl(struct pt_regs *);
 
 /* kernel/process_32.c */
 int sys_clone(struct pt_regs *);
@@ -70,9 +69,6 @@ int sys_vm86(struct pt_regs *);
 #else /* CONFIG_X86_32 */
 
 /* X86_64 only */
-/* kernel/ioport.c */
-asmlinkage long sys_iopl(unsigned int, struct pt_regs *);
-
 /* kernel/process_64.c */
 asmlinkage long sys_clone(unsigned long, unsigned long,
 			  void __user *, void __user *,

diff --git a/trunk/arch/x86/kernel/entry_32.S b/trunk/arch/x86/kernel/entry_32.S
@@ -758,7 +758,7 @@ ptregs_##name: \
 	addl $4,%esp; \
 	ret
 
-PTREGSCALL0(iopl)
+PTREGSCALL1(iopl)
 PTREGSCALL0(fork)
 PTREGSCALL0(clone)
 PTREGSCALL0(vfork)

diff --git a/trunk/arch/x86/kernel/ioport.c b/trunk/arch/x86/kernel/ioport.c
@@ -103,9 +103,10 @@ asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int turn_on)
  * on system-call entry - see also fork() and the signal handling
  * code.
  */
-static int do_iopl(unsigned int level, struct pt_regs *regs)
+long sys_iopl(unsigned int level, struct pt_regs *regs)
 {
 	unsigned int old = (regs->flags >> 12) & 3;
+	struct thread_struct *t = &current->thread;
 
 	if (level > 3)
 		return -EINVAL;
@@ -115,29 +116,10 @@ static int do_iopl(unsigned int level, struct pt_regs *regs)
 			return -EPERM;
 	}
 	regs->flags = (regs->flags & ~X86_EFLAGS_IOPL) | (level << 12);
-
-	return 0;
-}
-
 #ifdef CONFIG_X86_32
-long sys_iopl(struct pt_regs *regs)
-{
-	unsigned int level = regs->bx;
-	struct thread_struct *t = &current->thread;
-	int rc;
-
-	rc = do_iopl(level, regs);
-	if (rc < 0)
-		goto out;
-
 	t->iopl = level << 12;
 	set_iopl_mask(t->iopl);
-out:
-	return rc;
-}
-#else
-asmlinkage long sys_iopl(unsigned int level, struct pt_regs *regs)
-{
-	return do_iopl(level, regs);
-}
 #endif
+
+	return 0;
+}