From: Mika Westerberg <mika.westerberg@linux.intel.com>
Date: Fri, 19 Apr 2024 05:17:58 +0000 (+0300)
Subject: thunderbolt: There are only 5 basic router registers in pre-USB4 routers
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=a3ad3a90e0a722d9a50c01cfb40e6cfbb975e529;p=linux.git

thunderbolt: There are only 5 basic router registers in pre-USB4 routers

Intel pre-USB4 routers only have ROUTER_CS_0 up to ROUTER_CS_4 and it
immediately follows the TMU router registers. Correct this accordingly.

Reported-by: Rajaram Regupathy <rajaram.regupathy@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
---

diff --git a/drivers/thunderbolt/debugfs.c b/drivers/thunderbolt/debugfs.c
index e324cd8997193..193e9dfc983b6 100644
--- a/drivers/thunderbolt/debugfs.c
+++ b/drivers/thunderbolt/debugfs.c
@@ -1346,7 +1346,7 @@ static int switch_basic_regs_show(struct tb_switch *sw, struct seq_file *s)
 	if (tb_switch_is_usb4(sw))
 		dwords = ARRAY_SIZE(data);
 	else
-		dwords = 7;
+		dwords = 5;
 
 	ret = tb_sw_read(sw, data, TB_CFG_SWITCH, 0, dwords);
 	if (ret)