[PATCH] nvme: fix async event trace event

[Keith Busch]

From: Keith Busch <kbusch at kernel.org>

Mixing AER Event Type and Event Info has masking clashes. Just print the
event type, but also include the event info of the AER result in the
trace.

Fixes: 09bd1ff4b15143b ("nvme-core: add async event trace helper")
Reported-by: Nate Thornton <nate.thornton at samsung.com>
Cc: Chaitanya Kulkarni <kch at nvidia.com>
Signed-off-by: Keith Busch <kbusch at kernel.org>
---
 drivers/nvme/host/core.c  |  5 +----
 drivers/nvme/host/trace.h | 15 ++++++---------
 2 files changed, 7 insertions(+), 13 deletions(-)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index d6a9bac91a4cd..bdf1601219fc4 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -4819,8 +4819,6 @@ static bool nvme_handle_aen_notice(struct nvme_ctrl *ctrl, u32 result)
 	u32 aer_notice_type = nvme_aer_subtype(result);
 	bool requeue = true;
 
-	trace_nvme_async_event(ctrl, aer_notice_type);
-
 	switch (aer_notice_type) {
 	case NVME_AER_NOTICE_NS_CHANGED:
 		set_bit(NVME_AER_NOTICE_NS_CHANGED, &ctrl->events);
@@ -4856,7 +4854,6 @@ static bool nvme_handle_aen_notice(struct nvme_ctrl *ctrl, u32 result)
 
 static void nvme_handle_aer_persistent_error(struct nvme_ctrl *ctrl)
 {
-	trace_nvme_async_event(ctrl, NVME_AER_ERROR);
 	dev_warn(ctrl->device, "resetting controller due to AER\n");
 	nvme_reset_ctrl(ctrl);
 }
@@ -4872,6 +4869,7 @@ void nvme_complete_async_event(struct nvme_ctrl *ctrl, __le16 status,
 	if (le16_to_cpu(status) >> 1 != NVME_SC_SUCCESS)
 		return;
 
+	trace_nvme_async_event(ctrl, result);
 	switch (aer_type) {
 	case NVME_AER_NOTICE:
 		requeue = nvme_handle_aen_notice(ctrl, result);
@@ -4889,7 +4887,6 @@ void nvme_complete_async_event(struct nvme_ctrl *ctrl, __le16 status,
 	case NVME_AER_SMART:
 	case NVME_AER_CSS:
 	case NVME_AER_VS:
-		trace_nvme_async_event(ctrl, aer_type);
 		ctrl->aen_result = result;
 		break;
 	default:
diff --git a/drivers/nvme/host/trace.h b/drivers/nvme/host/trace.h
index 6f0eaf6a15282..4fb5922ffdac5 100644
--- a/drivers/nvme/host/trace.h
+++ b/drivers/nvme/host/trace.h
@@ -127,15 +127,12 @@ TRACE_EVENT(nvme_async_event,
 	),
 	TP_printk("nvme%d: NVME_AEN=%#08x [%s]",
 		__entry->ctrl_id, __entry->result,
-		__print_symbolic(__entry->result,
-		aer_name(NVME_AER_NOTICE_NS_CHANGED),
-		aer_name(NVME_AER_NOTICE_ANA),
-		aer_name(NVME_AER_NOTICE_FW_ACT_STARTING),
-		aer_name(NVME_AER_NOTICE_DISC_CHANGED),
-		aer_name(NVME_AER_ERROR),
-		aer_name(NVME_AER_SMART),
-		aer_name(NVME_AER_CSS),
-		aer_name(NVME_AER_VS))
+		__print_symbolic(__entry->result & 0x7,
+			aer_name(NVME_AER_ERROR),
+			aer_name(NVME_AER_SMART),
+			aer_name(NVME_AER_NOTICE),
+			aer_name(NVME_AER_CSS),
+			aer_name(NVME_AER_VS))
 	)
 );
 
-- 
2.34.1