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hwmon/w83627ehf: Add error messages for two error cases

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If the Super-I/O device is disabled, it is likely the BIOS has a good
reason for leaving it disabled, so give a warning when enabling it --
it's not likely to be wired correctly or be able to give good data.

Also, if the Super-I/O device is configured with an address of 0, the
driver refuses to initialize it.

Signed-off-by: David Hubbard <david.c.hubbard@gmail.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
This commit is contained in:
David Hubbard 2007-06-24 11:17:09 +02:00 committed by Mark M. Hoffman
parent 1ea6dd3840
commit 475ef85512
1 changed files with 6 additions and 1 deletions
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7
drivers/hwmon/w83627ehf.c
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@ -1387,14 +1387,19 @@ static int __init w83627ehf_find(int sioaddr, unsigned short *addr,
| superio_inb(sioaddr, SIO_REG_ADDR + 1);
*addr = val & IOREGION_ALIGNMENT;
if (*addr == 0) {
printk(KERN_ERR DRVNAME ": Refusing to enable a Super-I/O "
"device with a base I/O port 0.\n");
superio_exit(sioaddr);
return -ENODEV;
}
/* Activate logical device if needed */
val = superio_inb(sioaddr, SIO_REG_ENABLE);
if (!(val & 0x01))
if (!(val & 0x01)) {
printk(KERN_WARNING DRVNAME ": Forcibly enabling Super-I/O. "
"Sensor is probably unusable.\n");
superio_outb(sioaddr, SIO_REG_ENABLE, val | 0x01);
}
superio_exit(sioaddr);
pr_info(DRVNAME ": Found %s chip at %#x\n", sio_name, *addr);