From: Guenter Roeck <linux@roeck-us.net>
Date: Tue, 18 Apr 2017 17:00:31 +0000 (-0700)
Subject: Disable access to 2nd Super-IO chip
X-Git-Tag: v1.0~32
X-Git-Url: https://git.sur5r.net/?p=groeck-it87;a=commitdiff_plain;h=c242e32088bcc1b49695421e591e0b27aebffe5d

Disable access to 2nd Super-IO chip

It is known to be broken.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---

diff --git a/it87.c b/it87.c
index da6cd41..21e5724 100644
--- a/it87.c
+++ b/it87.c
@@ -3769,6 +3769,12 @@ static int __init sm_it87_init(void)
 		return err;
 
 	for (i = 0; i < ARRAY_SIZE(sioaddr); i++) {
+		/*
+		 * Accessing the second Super-IO chi can result in board
+		 * hangs. Disable until we figure out what is going on.
+		 */
+		if (it87_sio4e_broken && sioaddr[i] == 0x4e)
+			continue;
 		memset(&sio_data, 0, sizeof(struct it87_sio_data));
 		isa_address = 0;
 		err = it87_find(sioaddr[i], &isa_address, &sio_data);