mfd: lpc_ich: Fix ACPI enable bitmask

The original bitmask of 0x10 was incorrect and would result in a write
to a reserved read-only bit instead of enabling the ACPI I/O
region.  Update it to the proper value of 0x80.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Tested-by: Rajat Jain <rajatjain@juniper.net>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
(cherry picked from commit f5dccb15877b82a40950c6f752d5345c86189fc9)

Signed-off-by: Chang Rebecca Swee Fun <rebecca.swee.fun.chang@intel.com>

diff --git a/drivers/mfd/lpc_ich.c b/drivers/mfd/lpc_ich.c
index 17eff09..2be85a4 100644 (file)
--- a/drivers/mfd/lpc_ich.c
+++ b/drivers/mfd/lpc_ich.c
@@ -759,7 +759,7 @@ static void lpc_ich_enable_acpi_space(struct pci_dev *dev)
        u8 reg_save;
 
        pci_read_config_byte(dev, priv->acpi.ctrl, &reg_save);
-       pci_write_config_byte(dev, priv->acpi.ctrl, reg_save | 0x10);
+       pci_write_config_byte(dev, priv->acpi.ctrl, reg_save | 0x80);
        priv->acpi.save = reg_save;
 }