From: Yongqiang Sun <yongqiang.sun@amd.com>
Date: Tue, 23 Feb 2021 14:57:21 +0000 (-0500)
Subject: drm/amd/display: Fix dmub trace event not update issue
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d829303c5b7249d1fe1d74b86d28289ce1b34a50;p=linux.git

drm/amd/display: Fix dmub trace event not update issue

[Why & How]
Reference to read pointer which is incorrect.
Change to reference to write pointer.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Eryk Brol <eryk.brol@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c
index 55ee27defd0f1..2522492dcd425 100644
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c
@@ -722,7 +722,7 @@ enum dmub_status dmub_srv_cmd_with_reply_data(struct dmub_srv *dmub,
 static inline void dmub_rb_out_trace_buffer_front(struct dmub_rb *rb,
 				 void *entry)
 {
-	const uint64_t *src = (const uint64_t *)(rb->base_address) + rb->rptr / sizeof(uint64_t);
+	const uint64_t *src = (const uint64_t *)(rb->base_address) + rb->wrpt / sizeof(uint64_t);
 	uint64_t *dst = (uint64_t *)entry;
 	uint8_t i;