[PATCH] ppc64: squash childregs warnings

Squash a couple of "pointer from integer" warnings recently introduced.
Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/ppc64/kernel/process.c

@@ -410,7 +410,7 @@ void start_thread(struct pt_regs *regs, unsigned long fdptr, unsigned long sp)
 		unsigned long childregs = (unsigned long)current->thread_info +
 						THREAD_SIZE;
 		childregs -= sizeof(struct pt_regs);
-		current->thread.regs = childregs;
+		current->thread.regs = (struct pt_regs *)childregs;
 	}
 
 	regs->nip = entry;

arch/ppc64/kernel/sys_ppc32.c

@@ -642,7 +642,7 @@ void start_thread32(struct pt_regs* regs, unsigned long nip, unsigned long sp)
 		unsigned long childregs = (unsigned long)current->thread_info +
 						THREAD_SIZE;
 		childregs -= sizeof(struct pt_regs);
-		current->thread.regs = childregs;
+		current->thread.regs = (struct pt_regs *)childregs;
 	}
 
 	/*