From: Al Viro <viro@zeniv.linux.org.uk>
Date: Mon, 22 Oct 2012 02:33:39 +0000 (-0400)
Subject: powerpc: make fork_idle() take the common "kernel thread" path in copy_thread()
X-Git-Tag: next-20121023~9^2^3
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ab75819d3942a34d151a34fd43f346d5d8a48148;p=karo-tx-linux.git

powerpc: make fork_idle() take the common "kernel thread" path in copy_thread()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 3665d287780f..f6d244db9203 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -745,7 +745,7 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
 	/* Copy registers */
 	sp -= sizeof(struct pt_regs);
 	childregs = (struct pt_regs *) sp;
-	if (!regs) {
+	if (unlikely(p->flags & PF_KTHREAD)) {
 		struct thread_info *ti = (void *)task_stack_page(p);
 		memset(childregs, 0, sizeof(struct pt_regs));
 		childregs->gpr[1] = sp + sizeof(struct pt_regs);