From: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Date: Wed, 8 Jul 2009 13:46:18 +0000 (+0000)
Subject: powerpc: Fix booke user_disable_single_step()
X-Git-Tag: v2.6.31-rc4~38^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=28477fb1ed1a00c67b382ae8f37f35708e3bf5dd;p=pandora-kernel.git

powerpc: Fix booke user_disable_single_step()

On booke processors, gdb is seeing spurious SIGTRAPs when setting a
watchpoint.

user_disable_single_step() simply quits when the DAC is non-zero.  It should
be clearing the DBCR0_IC and DBCR0_BT bits from the dbcr0 register and
TIF_SINGLESTEP from the thread flag.

Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

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