diff options
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/it87.c | 51 |
1 files changed, 11 insertions, 40 deletions
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c index 53cc2b6d6385..55e1c835a046 100644 --- a/drivers/hwmon/it87.c +++ b/drivers/hwmon/it87.c @@ -2,7 +2,7 @@ it87.c - Part of lm_sensors, Linux kernel modules for hardware monitoring. - Supports: IT8705F Super I/O chip w/LPC interface & SMBus + Supports: IT8705F Super I/O chip w/LPC interface IT8712F Super I/O chip w/LPC interface & SMBus Sis950 A clone of the IT8705F @@ -47,7 +47,7 @@ /* Addresses to scan */ static unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END }; -static unsigned short isa_address = 0x290; +static unsigned short isa_address; /* Insmod parameters */ I2C_CLIENT_INSMOD_2(it87, it8712); @@ -706,7 +706,7 @@ static int it87_isa_attach_adapter(struct i2c_adapter *adapter) } /* SuperIO detection - will change isa_address if a chip is found */ -static int __init it87_find(int *address) +static int __init it87_find(unsigned short *address) { int err = -ENODEV; @@ -757,34 +757,7 @@ int it87_detect(struct i2c_adapter *adapter, int address, int kind) if (!request_region(address, IT87_EXTENT, it87_isa_driver.name)) goto ERROR0; - /* Probe whether there is anything available on this address. Already - done for SMBus and Super-I/O clients */ - if (kind < 0) { - if (is_isa && !chip_type) { -#define REALLY_SLOW_IO - /* We need the timeouts for at least some IT87-like chips. But only - if we read 'undefined' registers. */ - i = inb_p(address + 1); - if (inb_p(address + 2) != i - || inb_p(address + 3) != i - || inb_p(address + 7) != i) { - err = -ENODEV; - goto ERROR1; - } -#undef REALLY_SLOW_IO - - /* Let's just hope nothing breaks here */ - i = inb_p(address + 5) & 0x7f; - outb_p(~i & 0x7f, address + 5); - if ((inb_p(address + 5) & 0x7f) != (~i & 0x7f)) { - outb_p(i, address + 5); - err = -ENODEV; - goto ERROR1; - } - } - } - - /* OK. For now, we presume we have a valid client. We now create the + /* For now, we presume we have a valid client. We create the client structure, even though we cannot fill it completely yet. But it allows us to access it87_{read,write}_value. */ @@ -1182,20 +1155,18 @@ static struct it87_data *it87_update_device(struct device *dev) static int __init sm_it87_init(void) { - int addr, res; - - if (!it87_find(&addr)) { - isa_address = addr; - } + int res; res = i2c_add_driver(&it87_driver); if (res) return res; - res = i2c_isa_add_driver(&it87_isa_driver); - if (res) { - i2c_del_driver(&it87_driver); - return res; + if (!it87_find(&isa_address)) { + res = i2c_isa_add_driver(&it87_isa_driver); + if (res) { + i2c_del_driver(&it87_driver); + return res; + } } return 0; |