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i7core_edac: change remove module strategy

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The old remove module stragegy didn't work on devices with multiple
cores, since only one PCI device is used to open all mc's, due to
Nehalem nature.

Also, it were based at pdev value. However, this doesn't point to the
pci device used at mci->dev.

So, instead, it unregisters all devices at once, deleting them from the
device list.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2009-09-05 23:06:50 -03:00
parent 0f062792b4
commit 22e6bcbdcf
1 changed files with 35 additions and 20 deletions
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49
drivers/edac/i7core_edac.c
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@ -1138,11 +1138,18 @@ static void i7core_put_devices(struct i7core_dev *i7core_dev)
{
int i;
for (i = 0; i < N_DEVS; i++)
pci_dev_put(i7core_dev->pdev[i]);
list_del(&i7core_dev->list);
debugf0(__FILE__ ": %s()\n", __func__);
for (i = 0; i < N_DEVS; i++) {
struct pci_dev *pdev = i7core_dev->pdev[i];
if (!pdev)
continue;
debugf0("Removing dev %02x:%02x.%d\n",
pdev->bus->number,
PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
pci_dev_put(pdev);
}
kfree(i7core_dev->pdev);
list_del(&i7core_dev->list);
kfree(i7core_dev);
}
@ -1863,31 +1870,39 @@ fail0:
static void __devexit i7core_remove(struct pci_dev *pdev)
{
struct mem_ctl_info *mci;
struct i7core_pvt *pvt;
struct i7core_dev *i7core_dev;
struct i7core_dev *i7core_dev, *tmp;
debugf0(__FILE__ ": %s()\n", __func__);
if (i7core_pci)
edac_pci_release_generic_ctl(i7core_pci);
/*
* we have a trouble here: pdev value for removal will be wrong, since
* it will point to the X58 register used to detect that the machine
* is a Nehalem or upper design. However, due to the way several PCI
* devices are grouped together to provide MC functionality, we need
* to use a different method for releasing the devices
*/
mci = edac_mc_del_mc(&pdev->dev);
if (!mci)
return;
mutex_lock(&i7core_edac_lock);
list_for_each_entry_safe(i7core_dev, tmp, &i7core_edac_list, list) {
mci = edac_mc_del_mc(&i7core_dev->pdev[0]->dev);
if (mci) {
struct i7core_pvt *pvt = mci->pvt_info;
/* Unregisters on edac_mce in order to receive memory errors */
pvt = mci->pvt_info;
i7core_dev = pvt->i7core_dev;
edac_mce_unregister(&pvt->edac_mce);
/* retrieve references to resources, and free those resources */
mutex_lock(&i7core_edac_lock);
i7core_put_devices(i7core_dev);
mutex_unlock(&i7core_edac_lock);
kfree(mci->ctl_name);
edac_mc_free(mci);
i7core_put_devices(i7core_dev);
} else {
i7core_printk(KERN_ERR,
"Couldn't find mci for socket %d\n",
i7core_dev->socket);
}
}
mutex_unlock(&i7core_edac_lock);
}
MODULE_DEVICE_TABLE(pci, i7core_pci_tbl);