From: Roman Li <Roman.Li@amd.com>
Date: Wed, 16 Aug 2017 19:06:49 -0400
Subject: drm/amd/display: increase polling interval for fbc status update
Git-commit: 1bd4653a29a49f6fd732cd294e0f87b15feec5a8
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

1.Fixing error message:
"wait counter exceeded, changes to HW not applied"
2. Added "FBC status changed to 0/1" logs

Signed-off-by: Roman Li <Roman.Li@amd.com>
Reviewed-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/display/dc/dce110/dce110_compressor.c |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_compressor.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_compressor.c
@@ -115,7 +115,7 @@ static void wait_for_fbc_state_changed(
 			FBC_STATUS,
 			FBC_ENABLE_STATUS) == enabled)
 			break;
-		udelay(10);
+		msleep(10);
 		counter++;
 	}
 
@@ -124,7 +124,13 @@ static void wait_for_fbc_state_changed(
 			cp110->base.ctx->logger, LOG_WARNING,
 			"%s: wait counter exceeded, changes to HW not applied",
 			__func__);
+	} else {
+		dm_logger_write(
+			cp110->base.ctx->logger, LOG_SYNC,
+			"FBC status changed to %d", enabled);
 	}
+
+
 }
 
 void dce110_compressor_power_up_fbc(struct compressor *compressor)