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authorDave Airlie <airlied@redhat.com>2016-03-14 09:42:34 +1000
committerDave Airlie <airlied@redhat.com>2016-03-14 09:46:02 +1000
commit9b61c0fcdf0cfd20a85d9856d46142e7f297de0a (patch)
treed4abe6aa3f4e1e088f9da1d0597e078b1fe58912 /arch/powerpc/kernel/hw_breakpoint.c
parent550e3b23a53c88adfa46e64f9d442743e65d47da (diff)
parent125234dc8b1cc862f52d8bd5b37c36cc59b2cb86 (diff)
downloadlinux-9b61c0fcdf0cfd20a85d9856d46142e7f297de0a.tar.bz2
Merge drm-fixes into drm-next.
Nouveau wanted this to avoid some worse conflicts when I merge that.
Diffstat (limited to 'arch/powerpc/kernel/hw_breakpoint.c')
-rw-r--r--arch/powerpc/kernel/hw_breakpoint.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/hw_breakpoint.c b/arch/powerpc/kernel/hw_breakpoint.c
index 05e804cdecaa..aec9a1b1d25b 100644
--- a/arch/powerpc/kernel/hw_breakpoint.c
+++ b/arch/powerpc/kernel/hw_breakpoint.c
@@ -109,8 +109,9 @@ void arch_unregister_hw_breakpoint(struct perf_event *bp)
* If the breakpoint is unregistered between a hw_breakpoint_handler()
* and the single_step_dabr_instruction(), then cleanup the breakpoint
* restoration variables to prevent dangling pointers.
+ * FIXME, this should not be using bp->ctx at all! Sayeth peterz.
*/
- if (bp->ctx && bp->ctx->task)
+ if (bp->ctx && bp->ctx->task && bp->ctx->task != ((void *)-1L))
bp->ctx->task->thread.last_hit_ubp = NULL;
}