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.y...@freescale.com>
---
arch/powerpc/kernel/ptrace.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index 98c2fc1..c634970 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -894,7 +894,7 @@ 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.dbcr0 &= ~DBCR0_IC;
+ task->thread.dbcr0 &= ~(DBCR0_IC|DBCR0_BT);
/*
* Test to see if any of the DBCR_ACTIVE_EVENTS bits are set.
*/
--
1.7.0.4
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