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i7core_edac: Be sure that the edac pci handler will be properly released 

With multi-sockets, more than one edac pci handler is enabled. Be sure to
un-register all instances.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2010-08-10 11:22:01 -03:00
parent f6f94e2ab1
commit 939747bd68
3 changed files with 28 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/edac/edac_core.h
View File

@ -810,6 +810,7 @@ extern struct mem_ctl_info *edac_mc_alloc(unsigned sz_pvt, unsigned nr_csrows,
extern int edac_mc_add_mc(struct mem_ctl_info *mci);
extern void edac_mc_free(struct mem_ctl_info *mci);
extern struct mem_ctl_info *edac_mc_find(int idx);
extern struct mem_ctl_info *find_mci_by_dev(struct device *dev);
extern struct mem_ctl_info *edac_mc_del_mc(struct device *dev);
extern int edac_mc_find_csrow_by_page(struct mem_ctl_info *mci,
unsigned long page);

6
drivers/edac/edac_mc.c
View File

@ -239,13 +239,14 @@ void edac_mc_free(struct mem_ctl_info *mci)
EXPORT_SYMBOL_GPL(edac_mc_free);
/*
/**
* find_mci_by_dev
*
* scan list of controllers looking for the one that manages
* the 'dev' device
* @dev: pointer to a struct device related with the MCI
*/
static struct mem_ctl_info *find_mci_by_dev(struct device *dev)
struct mem_ctl_info *find_mci_by_dev(struct device *dev)
{
struct mem_ctl_info *mci;
struct list_head *item;
@ -261,6 +262,7 @@ static struct mem_ctl_info *find_mci_by_dev(struct device *dev)
return NULL;
}
EXPORT_SYMBOL_GPL(find_mci_by_dev);
/*
* handler for EDAC to check if NMI type handler has asserted interrupt

38
drivers/edac/i7core_edac.c
View File

@ -261,6 +261,9 @@ struct i7core_pvt {
/* Count indicator to show errors not got */
unsigned mce_overrun;
/* Struct to control EDAC polling */
struct edac_pci_ctl_info *i7core_pci;
};
/* Static vars */
@ -378,8 +381,6 @@ static const struct pci_device_id i7core_pci_tbl[] __devinitdata = {
{0,} /* 0 terminated list. */
};
static struct edac_pci_ctl_info *i7core_pci;
/****************************************************************************
Anciliary status routines
****************************************************************************/
@ -1906,9 +1907,9 @@ static int i7core_register_mci(struct i7core_dev *i7core_dev,
}
/* allocating generic PCI control info */
i7core_pci = edac_pci_create_generic_ctl(&i7core_dev->pdev[0]->dev,
pvt->i7core_pci = edac_pci_create_generic_ctl(&i7core_dev->pdev[0]->dev,
EDAC_MOD_STR);
if (unlikely(!i7core_pci)) {
if (unlikely(!pvt->i7core_pci)) {
printk(KERN_WARNING
"%s(): Unable to create PCI control\n",
__func__);
@ -2008,12 +2009,10 @@ static void __devexit i7core_remove(struct pci_dev *pdev)
{
struct mem_ctl_info *mci;
struct i7core_dev *i7core_dev, *tmp;
struct i7core_pvt *pvt;
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
@ -2024,19 +2023,28 @@ static void __devexit i7core_remove(struct pci_dev *pdev)
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;
mci = find_mci_by_dev(&i7core_dev->pdev[0]->dev);
if (unlikely(!mci || !mci->pvt_info)) {
i7core_printk(KERN_ERR,
"Couldn't find mci hanler\n");
} else {
pvt = mci->pvt_info;
i7core_dev = pvt->i7core_dev;
if (likely(pvt->i7core_pci))
edac_pci_release_generic_ctl(pvt->i7core_pci);
else
i7core_printk(KERN_ERR,
"Couldn't find mem_ctl_info for socket %d\n",
i7core_dev->socket);
pvt->i7core_pci = NULL;
edac_mc_del_mc(&i7core_dev->pdev[0]->dev);
edac_mce_unregister(&pvt->edac_mce);
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);
}
}
probed--;