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powerpc/booke: clear DBCR0_BT in user_disable_single_step()

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BookE version of user_disable_single_step() clears DBCR0_IC for the
instruction completion debug, but did not also clear DBCR0_BT for the
branch taken exception.  This behavior was lost by the 2/2010 patch.

Signed-off-by: James Yang <James.Yang@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
This commit is contained in:
James Yang 2013-07-05 14:49:43 -05:00 committed by Scott Wood
parent 3743c9b8ce
commit 682775b8de
1 changed files with 1 additions and 1 deletions
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arch/powerpc/kernel/ptrace.c
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@ -895,7 +895,7 @@ void user_disable_single_step(struct task_struct *task)
* And, after doing so, if all debug flags are off, turn
* off DBCR0(IDM) and MSR(DE) .... Torez
*/
task->thread.debug.dbcr0 &= ~DBCR0_IC;
task->thread.debug.dbcr0 &= ~(DBCR0_IC|DBCR0_BT);
/*
* Test to see if any of the DBCR_ACTIVE_EVENTS bits are set.
*/