From eb42f93d7f329d7ff24d99975ce144f01b1990fb Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Thu, 12 Jul 2012 22:47:37 +0200 Subject: [PATCH] hwmon: (it87) Preserve configuration register bits on init commit 41002f8dd5938d5ad1d008ce5bfdbfe47fa7b4e8 upstream. We were accidentally losing one bit in the configuration register on device initialization. It was reported to freeze one specific system right away. Properly preserve all bits we don't explicitly want to change in order to prevent that. Reported-by: Stevie Trujillo Signed-off-by: Jean Delvare Reviewed-by: Guenter Roeck Signed-off-by: Ben Hutchings --- drivers/hwmon/it87.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c index d912649fac5..1ba7af21271 100644 --- a/drivers/hwmon/it87.c +++ b/drivers/hwmon/it87.c @@ -2086,7 +2086,7 @@ static void __devinit it87_init_device(struct platform_device *pdev) /* Start monitoring */ it87_write_value(data, IT87_REG_CONFIG, - (it87_read_value(data, IT87_REG_CONFIG) & 0x36) + (it87_read_value(data, IT87_REG_CONFIG) & 0x3e) | (update_vbat ? 0x41 : 0x01)); } -- 2.34.1