From: Arnd Bergmann <arnd@arndb.de>
Date: Mon, 8 Jul 2019 13:53:18 +0000 (+0200)
Subject: drm/amd/display: dcn20: include linux/delay.h
X-Git-Tag: v5.4-rc1~498^2~7^2~8
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c602b36fe245f2114153f6690d1222ce1a51e942;p=platform%2Fkernel%2Flinux-rpi.git

drm/amd/display: dcn20: include linux/delay.h

Without this header, we get a compiler error in some configurations:

.../dc/dcn20/dcn20_hwseq.c: In function 'dcn20_hwss_wait_for_blank_complete':
.../dc/dcn20/dcn20_hwseq.c:1493:3: error: implicit declaration of function 'udelay' [-Werror=implicit-function-declaration]

Note: the use of udelay itself may be problematic, as can occupy
the CPU for 200ms in a busy-loop here.

Fixes: 7ed4e6352c16 ("drm/amd/display: Add DCN2 HW Sequencer and Resource")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
index 4b0d8b9..6925d25 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
@@ -22,6 +22,7 @@
  * Authors: AMD
  *
  */
+#include <linux/delay.h>
 
 #include "dm_services.h"
 #include "dm_helpers.h"