[PATCH 2/2] drm/amd/display: Add previous prototype to 'optc3_wait_drr_doublebuffer_pending_clear'

[Caio Novais]

Compiling AMD GPU drivers displays a warning:

drivers/gpu/drm/amd/amdgpu/../display/dc/dcn30/dcn30_optc.c:294:6: warning: no 
previous prototype for ‘optc3_wait_drr_doublebuffer_pending_clear’ 
[-Wmissing-prototypes]

Get rid of it by adding a function prototype

'optc3_wait_drr_doublebuffer_pending_clear(struct timing_generator *optc)' on 
drivers/gpu/drm/amd/display/dc/dcn30/dcn30_optc.h

Signed-off-by: Caio Novais <caionov...@usp.br>
---
 drivers/gpu/drm/amd/display/dc/dcn30/dcn30_optc.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_optc.h 
b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_optc.h
index fb06dc9a4893..2e3ba6e2f336 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_optc.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_optc.h
@@ -331,6 +331,8 @@ void optc3_lock_doublebuffer_enable(struct timing_generator 
*optc);
 
 void optc3_lock_doublebuffer_disable(struct timing_generator *optc);
 
+void optc3_wait_drr_doublebuffer_pending_clear(struct timing_generator *optc);
+
 void optc3_set_drr_trigger_window(struct timing_generator *optc,
                uint32_t window_start, uint32_t window_end);
 
-- 
2.40.0