Commit 41002f8d authored Jul 12, 2012 by Jean Delvare Committed by Jean Delvare Jul 12, 2012

hwmon: (it87) Preserve configuration register bits on init



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 <stevie.trujillo@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>

parent 918227bb

drivers/hwmon/it87.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -2341,7 +2341,7 @@ static void __devinit it87_init_device(struct platform_device *pdev)

	/* Start monitoring */		/* Start monitoring */
	it87_write_value(data, IT87_REG_CONFIG,		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));		\| (update_vbat ? 0x41 : 0x01));
	}		}