[PATCH] ppc64: fix linkage error on G5

[Anton Blanchard <anton@samba.org>]

> When 2.6.12-rc1-mm1 is configured for a ppc64/G5, so CONFIG_PPC_PSERIES
> is disabled, linking of vmlinux fails with:
> 
> arch/ppc64/kernel/built-in.o(.text+0x7de0): In function `.sys_call_table32':
> : undefined reference to `.ppc_rtas'
> arch/ppc64/kernel/built-in.o(.text+0x8668): In function `.sys_call_table':
> : undefined reference to `.ppc_rtas'
> make: *** [.tmp_vmlinux1] Error 1

It turns out we are trying to fix this problem twice, we may as well
remove the #define hack and use cond_syscall.

--

Move the ppc64 specific cond_syscall(ppc_rtas) into sys_ni.c so that it
takes effect. With this fixed we can remove the #define hack.

Signed-off-by: Anton Blanchard <anton@samba.org>

diff -puN arch/ppc64/kernel/misc.S~fix_ppc_rtas arch/ppc64/kernel/misc.S
--- foobar2/arch/ppc64/kernel/misc.S~fix_ppc_rtas	2005-03-22 02:41:53.819634410 +1100
+++ foobar2-anton/arch/ppc64/kernel/misc.S	2005-03-22 02:41:53.851631972 +1100
@@ -680,10 +680,6 @@ _GLOBAL(kernel_thread)
 	ld	r30,-16(r1)
 	blr
 
-#ifdef CONFIG_PPC_RTAS /* hack hack hack */
-#define ppc_rtas	sys_ni_syscall
-#endif
-
 /* Why isn't this a) automatic, b) written in 'C'? */	
 	.balign 8
 _GLOBAL(sys_call_table32)
diff -puN arch/ppc64/kernel/syscalls.c~fix_ppc_rtas arch/ppc64/kernel/syscalls.c
--- foobar2/arch/ppc64/kernel/syscalls.c~fix_ppc_rtas	2005-03-22 02:41:53.825633952 +1100
+++ foobar2-anton/arch/ppc64/kernel/syscalls.c	2005-03-22 02:41:53.852631895 +1100
@@ -256,6 +256,3 @@ void do_show_syscall_exit(unsigned long 
 {
 	printk(" -> %lx, current=%p cpu=%d\n", r3, current, smp_processor_id());
 }
-
-/* Only exists on P-series. */
-cond_syscall(ppc_rtas);
diff -puN kernel/sys_ni.c~fix_ppc_rtas kernel/sys_ni.c
--- foobar2/kernel/sys_ni.c~fix_ppc_rtas	2005-03-22 02:41:53.829633648 +1100
+++ foobar2-anton/kernel/sys_ni.c	2005-03-22 02:41:53.853631819 +1100
@@ -83,3 +83,4 @@ cond_syscall(sys_pciconfig_write);
 cond_syscall(sys_pciconfig_iobase);
 cond_syscall(sys32_ipc);
 cond_syscall(sys32_sysctl);
+cond_syscall(ppc_rtas);