linux-kernel - [PATCH] drm/amd/display: Use msleep instead of udelay for 8ms wait

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Date:   Tue, 25 Jun 2019 10:00:46 -0400
From:   Harry Wentland <harry.wentland@....com>
To:     <airlied@...il.com>, <natechancellor@...il.com>
CC:     <Anthony.Koo@....com>, <alexander.deucher@....com>,
        <Jun.Lei@....com>, <Bhawanpreet.Lakha@....com>,
        <sunpeng.li@....com>, <christian.koenig@....com>,
        <David1.Zhou@....com>, <amd-gfx@...ts.freedesktop.org>,
        <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
        Harry Wentland <harry.wentland@....com>
Subject: [PATCH] drm/amd/display: Use msleep instead of udelay for 8ms wait

arm32's udelay only allows values up to 2000 microseconds. msleep
does the trick for us here as there is no problem if this isn't
microsecond accurate and takes a tad longer.

Signed-off-by: Harry Wentland <harry.wentland@....com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_link.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index 4c31930f1cdf..f5d02f89b3f9 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -548,7 +548,7 @@ static void read_edp_current_link_settings_on_detect(struct dc_link *link)
 			break;
 		}
 
-		udelay(8000);
+		msleep(8);
 	}
 
 	ASSERT(status == DC_OK);
-- 
2.22.0