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xtensa: clear all DBREAKC registers on start 

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

Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Max Filippov 2016-03-03 18:34:29 +03:00 committed by Chris Zankel
parent 56b9f9d672
commit 7de7ac785a
1 changed files with 1 additions and 1 deletions
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2
arch/xtensa/kernel/head.S
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@ -128,7 +128,7 @@ 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