hwmon: (thmc50) Fix alarms clearing

This patch make use the interrupt status register instead
of the interrupt status mirror register. Reading of the mirror
register does not clear alarms.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>

diff --git a/drivers/hwmon/thmc50.c b/drivers/hwmon/thmc50.c
index 981d1f1..f79c750 100644 (file)
--- a/drivers/hwmon/thmc50.c
+++ b/drivers/hwmon/thmc50.c
@@ -47,10 +47,10 @@ I2C_CLIENT_MODULE_PARM(adm1022_temp3, "List of adapter,address pairs "
 #define THMC50_REG_DIE_CODE                    0x3F
 #define THMC50_REG_ANALOG_OUT                  0x19
 /*
- * We use mirror status register for reading alarms
- * so ACPI can use the primary status register.
+ * The mirror status register cannot be used as
+ * reading it does not clear alarms.
  */
-#define THMC50_REG_INTR_MIRROR                 0x4C
+#define THMC50_REG_INTR                                0x41
 
 const static u8 THMC50_REG_TEMP[] = { 0x27, 0x26, 0x20 };
 const static u8 THMC50_REG_TEMP_MIN[] = { 0x3A, 0x38, 0x2C };
@@ -441,7 +441,7 @@ static struct thmc50_data *thmc50_update_device(struct device *dev)
                data->analog_out =
                    i2c_smbus_read_byte_data(client, THMC50_REG_ANALOG_OUT);
                data->alarms =
-                   i2c_smbus_read_byte_data(client, THMC50_REG_INTR_MIRROR);
+                   i2c_smbus_read_byte_data(client, THMC50_REG_INTR);
                data->last_updated = jiffies;
                data->valid = 1;
        }