[PATCH 10/15] ARM: call printk conditonally on armv7-m

[Arnd Bergmann]

The "__invalid_entry" handler in the armv7-m code tries to
use printk to report an error condition. However, that cannot
work if CONFIG_PRINTK is disabled and we don't provide this
function.

This adds an #ifdef to skip the call to prevent a link error
in this case.

Signed-off-by: Arnd Bergmann <arnd at arndb.de>
---
 arch/arm/kernel/entry-v7m.S | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/kernel/entry-v7m.S b/arch/arm/kernel/entry-v7m.S
index 2260f1855820..8944f4991c3c 100644
--- a/arch/arm/kernel/entry-v7m.S
+++ b/arch/arm/kernel/entry-v7m.S
@@ -22,10 +22,12 @@
 
 __invalid_entry:
 	v7m_exception_entry
+#ifdef CONFIG_PRINTK
 	adr	r0, strerr
 	mrs	r1, ipsr
 	mov	r2, lr
 	bl	printk
+#endif
 	mov	r0, sp
 	bl	show_regs
 1:	b	1b
-- 
2.1.0.rc2