From 63642595a78da42f841fabcc3f309f4c1362dc40 Mon Sep 17 00:00:00 2001
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Date: Mon, 31 Aug 2020 21:43:17 +0800
Subject: [PATCH] soundwire: add definition for maximum number of ports
References: jsc#SLE-16518
Patch-mainline: v5.10-rc1
Git-commit: 63642595a78da42f841fabcc3f309f4c1362dc40
A Device may have at most 15 physical ports (DP0, DP1..DP14).
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Link: https://lore.kernel.org/r/20200831134318.11443-3-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
include/linux/soundwire/sdw.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h
index 76052f12c9f7..0aa4c6af7554 100644
--- a/include/linux/soundwire/sdw.h
+++ b/include/linux/soundwire/sdw.h
@@ -38,7 +38,8 @@ struct sdw_slave;
#define SDW_FRAME_CTRL_BITS 48
#define SDW_MAX_DEVICES 11
-#define SDW_VALID_PORT_RANGE(n) ((n) <= 14 && (n) >= 1)
+#define SDW_MAX_PORTS 15
+#define SDW_VALID_PORT_RANGE(n) ((n) < SDW_MAX_PORTS && (n) >= 1)
enum {
SDW_PORT_DIRN_SINK = 0,
--
2.16.4