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Message-Id: <20190708135329.694852-1-arnd@arndb.de>
Date: Mon, 8 Jul 2019 15:53:18 +0200
From: Arnd Bergmann <arnd@...db.de>
To: Harry Wentland <harry.wentland@....com>,
Leo Li <sunpeng.li@....com>,
Alex Deucher <alexander.deucher@....com>,
Christian König <christian.koenig@....com>,
"David (ChunMing) Zhou" <David1.Zhou@....com>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>
Cc: Arnd Bergmann <arnd@...db.de>,
Bhawanpreet Lakha <Bhawanpreet.Lakha@....com>,
Tony Cheng <Tony.Cheng@....com>,
Joshua Aberback <joshua.aberback@....com>,
Wenjing Liu <Wenjing.Liu@....com>,
Dmytro Laktyushkin <Dmytro.Laktyushkin@....com>,
amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] 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@...db.de>
---
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c | 1 +
1 file changed, 1 insertion(+)
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 4b0d8b9f61da..6925d25d2457 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"
--
2.20.0
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