From: Peter Tyser <ptyser@xes-inc.com>
Date: Wed, 5 Nov 2014 01:39:09 +0000 (+0800)
Subject: mfd: lpc_ich: Fix ACPI enable bitmask
X-Git-Tag: upstream/snapshot3+hdmi~55
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fa2d082b61bc0d64e80e5b554d825a2e7fa53533;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

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
--- 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;
 }