From 8e85cab858562734b9d323f392ba9956bbdc133c Mon Sep 17 00:00:00 2001
From: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
Date: Fri, 4 Mar 2022 14:57:30 -0600
Subject: [PATCH] ASoC: SOF: amd: Increase ACP_HW_SEM_RETRY_COUNT value
Git-commit: 8e85cab858562734b9d323f392ba9956bbdc133c
Patch-mainline: v5.18-rc1
References: jsc#PED-850

Host is trying to acquire semaphore lock based on HW_SEM_RETRY_COUNT
value which is set to 10 by default. So host will loop for 10 times
trying to acquire lock before giving error msg "Failed to acquire HW
lock". Though this loop count of 10 is good enough with most of the
times but we have observed such failure msg in very few cases(~5 %).

Increase ACP_HW_SEM_RETRY_COUNT to avoid such issue and loop for a
significant time period before throwing error. We're setting newer
loop count to quite higher value of 10K but it's very unlikely that
it will loop for this count, since for most of the cases lock will
get acquired at much lesser loop iterations.

Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220304205733.62233-8-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 sound/soc/sof/amd/acp.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/sof/amd/acp.h b/sound/soc/sof/amd/acp.h
index db1030d36811..f550a5010a91 100644
--- a/sound/soc/sof/amd/acp.h
+++ b/sound/soc/sof/amd/acp.h
@@ -17,7 +17,7 @@
 
 #define ACP_DSP_BAR	0
 
-#define ACP_HW_SEM_RETRY_COUNT			10
+#define ACP_HW_SEM_RETRY_COUNT			10000
 #define ACP_REG_POLL_INTERVAL                   500
 #define ACP_REG_POLL_TIMEOUT_US                 2000
 #define ACP_DMA_COMPLETE_TIMEOUT_US		5000
-- 
2.35.3