commit f110c0c1926028a233830c6166e4d40314420823
author Michael Neuling <mikey@neuling.org> Tue Apr 09 16:18:55 2013 +1000
committer Stephen Rothwell <sfr@canb.auug.org.au> Wed Apr 10 08:14:39 2013 +1000
tree e886262f3f73a0fadaa2ff7c5b91903f98ed139c
parent e8f2b548de7ae65e17ee911e54712a3f26f69c60

powerpc: fix compiling CONFIG_PPC_TRANSACTIONAL_MEM when CONFIG_ALTIVEC=n

We can't compile a kernel with CONFIG_ALTIVEC=n when
CONFIG_PPC_TRANSACTIONAL_MEM=y.  We currently get:

arch/powerpc/kernel/tm.S:320: Error: unsupported relocation against THREAD_VSCR
arch/powerpc/kernel/tm.S:323: Error: unsupported relocation against THREAD_VR0
arch/powerpc/kernel/tm.S:323: Error: unsupported relocation against THREAD_VR0
etc.

The below fixes this with a sprinkling of #ifdefs.

This was found by mpe with kisskb:
  http://kisskb.ellerman.id.au/kisskb/buildresult/8539442/

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

arch/powerpc/kernel/signal_64.c

diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c
index 995f854..c179428 100644
--- a/arch/powerpc/kernel/signal_64.c
+++ b/arch/powerpc/kernel/signal_64.c
@@ -522,10 +522,12 @@
 		do_load_up_transact_fpu(&current->thread);
 		regs->msr |= (MSR_FP | current->thread.fpexc_mode);
 	}
+#ifdef CONFIG_ALTIVEC
 	if (msr & MSR_VEC) {
 		do_load_up_transact_altivec(&current->thread);
 		regs->msr |= MSR_VEC;
 	}
+#endif
 
 	return err;
 }