[PATCH] uml: fix some ptrace functions returns values

From: Jeff Dike <jdike@addtoit.com>

This patch adds ptrace_setfpregs and makes these functions return -errno on
failure.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade_spam@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/um/sys-i386/ptrace_user.c

@@ -17,17 +17,30 @@
 
 int ptrace_getregs(long pid, unsigned long *regs_out)
 {
-	return(ptrace(PTRACE_GETREGS, pid, 0, regs_out));
+	if (ptrace(PTRACE_GETREGS, pid, 0, regs_out) < 0)
+		return -errno;
+	return 0;
 }
 
 int ptrace_setregs(long pid, unsigned long *regs)
 {
-	return(ptrace(PTRACE_SETREGS, pid, 0, regs));
+	if (ptrace(PTRACE_SETREGS, pid, 0, regs) < 0)
+		return -errno;
+	return 0;
 }
 
 int ptrace_getfpregs(long pid, unsigned long *regs)
 {
-	return(ptrace(PTRACE_GETFPREGS, pid, 0, regs));
+	if (ptrace(PTRACE_GETFPREGS, pid, 0, regs) < 0)
+		return -errno;
+	return 0;
+}
+
+int ptrace_setfpregs(long pid, unsigned long *regs)
+{
+	if (ptrace(PTRACE_SETFPREGS, pid, 0, regs) < 0)
+		return -errno;
+	return 0;
 }
 
 static void write_debugregs(int pid, unsigned long *regs)