[PATCH v2 5/5] MIPS/Perf-events: Use unsigned delta for right shift in event update

[Deng-Cheng Zhu <dengcheng.zhu@gmail.com>]

Leverage the commit for ARM by Will Deacon:

446a5a8b1eb91a6990e5c8fe29f14e7a95b69132
        ARM: 6205/1: perf: ensure counter delta is treated as unsigned

Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@gmail.com>
---
 arch/mips/kernel/perf_event.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/mips/kernel/perf_event.c b/arch/mips/kernel/perf_event.c
index 8f7d2f8..a824485 100644
--- a/arch/mips/kernel/perf_event.c
+++ b/arch/mips/kernel/perf_event.c
@@ -169,7 +169,7 @@ static void mipspmu_event_update(struct perf_event *event,
        unsigned long flags;
        int shift = 64 - TOTAL_BITS;
        s64 prev_raw_count, new_raw_count;
-       s64 delta;
+       u64 delta;
 
 again:
        prev_raw_count = local64_read(&hwc->prev_count);
-- 
1.7.1