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[WATCHDOG] iTCO_wdt: clean up probe(), modify err msg 

It's possible that the platform is not allowing reboot via TCO timer
expiration.

Also, differentiate between not finding a chipset that has TCO, and the case
where TCO is present but the driver fails to initialize for some reason.

Signed-off-by: Naga Chumbalkar <nagananda.chumbalkar@hp.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
hifive-unleashed-5.1
Naga Chumbalkar 2010-02-09 00:42:02 +01:00 committed by Wim Van Sebroeck
parent f538ed9ea0
commit ec26985be4
1 changed files with 9 additions and 10 deletions
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19
drivers/watchdog/iTCO_wdt.c
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@ -698,7 +698,7 @@ static int __devinit iTCO_wdt_init(struct pci_dev *pdev,
if (iTCO_wdt_private.iTCO_version == 2) {
pci_read_config_dword(pdev, 0xf0, &base_address);
if ((base_address & 1) == 0) {
printk(KERN_ERR PFX "RCBA is disabled by harddware\n");
printk(KERN_ERR PFX "RCBA is disabled by hardware\n");
ret = -ENODEV;
goto out;
}
@ -708,8 +708,8 @@ static int __devinit iTCO_wdt_init(struct pci_dev *pdev,
/* Check chipset's NO_REBOOT bit */
if (iTCO_wdt_unset_NO_REBOOT_bit() && iTCO_vendor_check_noreboot_on()) {
printk(KERN_ERR PFX "failed to reset NO_REBOOT flag, "
"reboot disabled by hardware\n");
printk(KERN_INFO PFX "unable to reset NO_REBOOT flag, "
"platform may have disabled it\n");
ret = -ENODEV; /* Cannot reset NO_REBOOT bit */
goto out_unmap;
}
@ -805,6 +805,7 @@ static void __devexit iTCO_wdt_cleanup(void)
static int __devinit iTCO_wdt_probe(struct platform_device *dev)
{
int ret = -ENODEV;
int found = 0;
struct pci_dev *pdev = NULL;
const struct pci_device_id *ent;
@ -814,19 +815,17 @@ static int __devinit iTCO_wdt_probe(struct platform_device *dev)
for_each_pci_dev(pdev) {
ent = pci_match_id(iTCO_wdt_pci_tbl, pdev);
if (ent) {
if (!(iTCO_wdt_init(pdev, ent, dev))) {
found++;
found++;
ret = iTCO_wdt_init(pdev, ent, dev);
if (!ret)
break;
}
}
}
if (!found) {
if (!found)
printk(KERN_INFO PFX "No card detected\n");
return -ENODEV;
}
return 0;
return ret;
}
static int __devexit iTCO_wdt_remove(struct platform_device *dev)