[PATCH] i2c-i801: Remove force_addr parameter

i2c-i801: Remove force_addr parameter

Remove the force_addr module parameter. It doesn't appear to ever
have been needed, and PCI resources shouldn't be arbitrarily
changed anyway.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2 files changed, 8 insertions, 30 deletions

diff --git a/Documentation/i2c/busses/i2c-i801 b/Documentation/i2c/busses/i2c-i801
index fd4b2712d570..e46c23458242 100644
--- a/Documentation/i2c/busses/i2c-i801
+++ b/Documentation/i2c/busses/i2c-i801
@@ -21,8 +21,7 @@ Authors:
 Module Parameters
 -----------------
 
-* force_addr: int
-  Forcibly enable the ICH at the given address. EXTREMELY DANGEROUS!
+None.
 
 
 Description
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index 4396dc91d5f5..0d5374cce9cc 100644
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -92,15 +92,6 @@
 #define I801_START              0x40
 #define I801_PEC_EN             0x80    /* ICH4 only */
 
-/* insmod parameters */
-
-/* If force_addr is set to anything different from 0, we forcibly enable
-   the I801 at the given address. VERY DANGEROUS! */
-static u16 force_addr;
-module_param(force_addr, ushort, 0);
-MODULE_PARM_DESC(force_addr,
-                 "Forcibly enable the I801 at the given address. "
-                 "EXTREMELY DANGEROUS!");
 
 static int i801_transaction(void);
 static int i801_block_transaction(union i2c_smbus_data *data, char read_write,
@@ -129,16 +120,12 @@ static int i801_setup(struct pci_dev *dev)
                 isich4 = 0;
 
         /* Determine the address of the SMBus areas */
-        if (force_addr) {
-                i801_smba = force_addr & 0xfff0;
-        } else {
-                pci_read_config_word(I801_dev, SMBBA, &i801_smba);
-                i801_smba &= 0xfff0;
-                if(i801_smba == 0) {
-                        dev_err(&dev->dev, "SMB base address uninitialized "
-                                "- upgrade BIOS or use force_addr=0xaddr\n");
-                        return -ENODEV;
-                }
+        pci_read_config_word(I801_dev, SMBBA, &i801_smba);
+        i801_smba &= 0xfff0;
+        if (!i801_smba) {
+                dev_err(&dev->dev, "SMBus base address uninitialized, "
+                        "upgrade BIOS\n");
+                return -ENODEV;
         }
 
         if (!request_region(i801_smba, (isich4 ? 16 : 8), i801_driver.name)) {
@@ -152,15 +139,7 @@ static int i801_setup(struct pci_dev *dev)
         temp &= ~SMBHSTCFG_I2C_EN;      /* SMBus timing */
         pci_write_config_byte(I801_dev, SMBHSTCFG, temp);
 
-        /* If force_addr is set, we program the new address here. Just to make
-           sure, we disable the device first. */
-        if (force_addr) {
-                pci_write_config_byte(I801_dev, SMBHSTCFG, temp & 0xfe);
-                pci_write_config_word(I801_dev, SMBBA, i801_smba);
-                pci_write_config_byte(I801_dev, SMBHSTCFG, temp | 0x01);
-                dev_warn(&dev->dev, "WARNING: I801 SMBus interface set to "
-                        "new address %04x!\n", i801_smba);
-        } else if ((temp & 1) == 0) {
+        if (!(temp & 1)) {
                 pci_write_config_byte(I801_dev, SMBHSTCFG, temp | 1);
                 dev_warn(&dev->dev, "enabling SMBus device\n");
         }