aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--drivers/hv/ring_buffer.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c
index 791f45dfc85d..26c93cf9f6be 100644
--- a/drivers/hv/ring_buffer.c
+++ b/drivers/hv/ring_buffer.c
@@ -75,6 +75,8 @@ static bool hv_need_to_signal(u32 old_write, struct hv_ring_buffer_info *rbi)
if (rbi->ring_buffer->interrupt_mask)
return false;
+ /* check interrupt_mask before read_index */
+ rmb();
/*
* This is the only case we need to signal when the
* ring transitions from being empty to non-empty.

Privacy Policy