diff options
Diffstat (limited to 'arch/arm/kernel/hw_breakpoint.c')
| -rw-r--r-- | arch/arm/kernel/hw_breakpoint.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/arch/arm/kernel/hw_breakpoint.c b/arch/arm/kernel/hw_breakpoint.c index 87acc25d7a3..a927ca1f556 100644 --- a/arch/arm/kernel/hw_breakpoint.c +++ b/arch/arm/kernel/hw_breakpoint.c @@ -796,7 +796,7 @@ unlock: /* * Called from either the Data Abort Handler [watchpoint] or the - * Prefetch Abort Handler [breakpoint] with preemption disabled. + * Prefetch Abort Handler [breakpoint] with interrupts disabled. */ static int hw_breakpoint_pending(unsigned long addr, unsigned int fsr, struct pt_regs *regs) @@ -804,8 +804,10 @@ static int hw_breakpoint_pending(unsigned long addr, unsigned int fsr, int ret = 0; u32 dscr; - /* We must be called with preemption disabled. */ - WARN_ON(preemptible()); + preempt_disable(); + + if (interrupts_enabled(regs)) + local_irq_enable(); /* We only handle watchpoints and hardware breakpoints. */ ARM_DBG_READ(c1, 0, dscr); @@ -824,10 +826,6 @@ static int hw_breakpoint_pending(unsigned long addr, unsigned int fsr, ret = 1; /* Unhandled fault. */ } - /* - * Re-enable preemption after it was disabled in the - * low-level exception handling code. - */ preempt_enable(); return ret; |