diff options
| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-11-30 08:14:30 -0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-11-01 10:01:49 -0200 |
| commit | 4055759145b421537207ed0d034041f1774ab41d (patch) | |
| tree | 9819fc092edb4fed369ebf6a7767174fdf484f4f | |
| parent | f9902f24fc2d6bcc836622aa70e77f7f9dfb30a9 (diff) | |
i7core_edac: return -ENODEV if no MC is found
Nehalem-EX uses a different memory controller. However, as the
memory controller is not visible on some Nehalem/Nehalem-EP, we
need to indirectly probe via a X58 PCI device. The same devices
are found on (some) Nehalem-EX. So, on those machines, the
probe routine needs to return -ENODEV, as the actual Memory
Controller registers won't be detected.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| -rw-r--r-- | drivers/edac/i7core_edac.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/edac/i7core_edac.c b/drivers/edac/i7core_edac.c index 304f550ed8d4..6ae7795dea86 100644 --- a/drivers/edac/i7core_edac.c +++ b/drivers/edac/i7core_edac.c @@ -2226,7 +2226,7 @@ fail0: static int __devinit i7core_probe(struct pci_dev *pdev, const struct pci_device_id *id) { - int rc; + int rc, count = 0; struct i7core_dev *i7core_dev; /* get the pci devices we want to reserve for our use */ @@ -2246,12 +2246,28 @@ static int __devinit i7core_probe(struct pci_dev *pdev, goto fail0; list_for_each_entry(i7core_dev, &i7core_edac_list, list) { + count++; rc = i7core_register_mci(i7core_dev); if (unlikely(rc < 0)) goto fail1; } - i7core_printk(KERN_INFO, "Driver loaded.\n"); + /* + * Nehalem-EX uses a different memory controller. However, as the + * memory controller is not visible on some Nehalem/Nehalem-EP, we + * need to indirectly probe via a X58 PCI device. The same devices + * are found on (some) Nehalem-EX. So, on those machines, the + * probe routine needs to return -ENODEV, as the actual Memory + * Controller registers won't be detected. + */ + if (!count) { + rc = -ENODEV; + goto fail1; + } + + i7core_printk(KERN_INFO, + "Driver loaded, %d memory controller(s) found.\n", + count); mutex_unlock(&i7core_edac_lock); return 0; |