Content-Disposition: inline; filename=i2c-i801-02-remove-force_addr-parameter.patch
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 at linux-fr.org>
---
Documentation/i2c/busses/i2c-i801 | 3 +--
drivers/i2c/busses/i2c-i801.c | 35 +++++++----------------------------
2 files changed, 8 insertions(+), 30 deletions(-)
--- linux-2.6.17-rc6.orig/Documentation/i2c/busses/i2c-i801 2006-06-08 13:25:15.000000000 +0200
+++ linux-2.6.17-rc6/Documentation/i2c/busses/i2c-i801 2006-06-08 13:51:43.000000000 +0200
@@ -21,8 +21,7 @@
Module Parameters
-----------------
-* force_addr: int
- Forcibly enable the ICH at the given address. EXTREMELY DANGEROUS!
+None.
Description
--- linux-2.6.17-rc6.orig/drivers/i2c/busses/i2c-i801.c 2006-06-08 13:25:36.000000000 +0200
+++ linux-2.6.17-rc6/drivers/i2c/busses/i2c-i801.c 2006-06-08 13:55:43.000000000 +0200
@@ -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 @@
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 @@
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");
}
--
Jean Delvare
