[PATCH 3.12 79/98] xtensa: clear all DBREAKC registers on start

From: Jiri Slaby
Date: Mon Apr 11 2016 - 09:37:50 EST


From: Max Filippov <jcmvbkbc@xxxxxxxxx>

3.12-stable review patch. If anyone has any objections, please let me know.

===============

commit 7de7ac785ae18a2cdc78d7560f48e3213d9ea0ab upstream.

There are XCHAL_NUM_DBREAK registers, clear them all.
This also fixes cryptic assembler error message with binutils 2.25 when
XCHAL_NUM_DBREAK is 0:

as: out of memory allocating 18446744073709551575 bytes after a total
of 495616 bytes

Signed-off-by: Max Filippov <jcmvbkbc@xxxxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
arch/xtensa/kernel/head.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/xtensa/kernel/head.S b/arch/xtensa/kernel/head.S
index 7d740ebbe198..bb12d778f64f 100644
--- a/arch/xtensa/kernel/head.S
+++ b/arch/xtensa/kernel/head.S
@@ -118,7 +118,7 @@ ENTRY(_startup)
wsr a0, icountlevel

.set _index, 0
- .rept XCHAL_NUM_DBREAK - 1
+ .rept XCHAL_NUM_DBREAK
wsr a0, SREG_DBREAKC + _index
.set _index, _index + 1
.endr
--
2.8.1