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edac: make i82443bxgx_edac coexist with intel_agp 

Fix 443BX/GX MCH suppport in a EDAC.

It makes i82443bxgx_edac coexist with intel_agp using the same approach as
several other EDAC drivers.

Tested on Intel's L443GX with redhat's 2.6.18 with whole EDAC subsystem
backported a while ago.

[root@host ~]# dmesg|grep -iE '(AGP|EDAC)'
Linux agpgart interface v0.101 (c) Dave Jones
agpgart: Detected an Intel 440GX Chipset.
agpgart: AGP aperture is 64M @ 0xf8000000
EDAC MC: Ver: 2.1.0 Jun 27 2008
EDAC MC0: Giving out device to 'i82443bxgx_edac' 'I82443BXGX': DEV 0000:00:00.0
EDAC PCI0: Giving out device to module 'i82443bxgx_edac' controller 'EDAC PCI controller': DEV '0000:00:00.0' (POLLED)

Signed-off-by: Vladislav Bogdanov <slava@nsys.by>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Dave Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Vladislav Bogdanov 2008-10-15 22:04:26 -07:00 committed by Linus Torvalds
parent 25cbe53ef1
commit 53a2fe5804
1 changed files with 61 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

63
drivers/edac/i82443bxgx_edac.c
View File

@ -114,6 +114,12 @@ struct i82443bxgx_edacmc_error_info {
static struct edac_pci_ctl_info *i82443bxgx_pci;
static struct pci_dev *mci_pdev; /* init dev: in case that AGP code has
* already registered driver
*/
static int i82443bxgx_registered = 1;
static void i82443bxgx_edacmc_get_error_info(struct mem_ctl_info *mci,
struct i82443bxgx_edacmc_error_info
*info)
@ -345,10 +351,17 @@ EXPORT_SYMBOL_GPL(i82443bxgx_edacmc_probe1);
static int __devinit i82443bxgx_edacmc_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
int rc;
debugf0("MC: " __FILE__ ": %s()\n", __func__);
/* don't need to call pci_device_enable() */
return i82443bxgx_edacmc_probe1(pdev, ent->driver_data);
rc = i82443bxgx_edacmc_probe1(pdev, ent->driver_data);
if (mci_pdev == NULL)
mci_pdev = pci_dev_get(pdev);
return rc;
}
static void __devexit i82443bxgx_edacmc_remove_one(struct pci_dev *pdev)
@ -387,15 +400,61 @@ static struct pci_driver i82443bxgx_edacmc_driver = {
static int __init i82443bxgx_edacmc_init(void)
{
int pci_rc;
/* Ensure that the OPSTATE is set correctly for POLL or NMI */
opstate_init();
return pci_register_driver(&i82443bxgx_edacmc_driver);
pci_rc = pci_register_driver(&i82443bxgx_edacmc_driver);
if (pci_rc < 0)
goto fail0;
if (mci_pdev == NULL) {
const struct pci_device_id *id = &i82443bxgx_pci_tbl[0];
int i = 0;
i82443bxgx_registered = 0;
while (mci_pdev == NULL && id->vendor != 0) {
mci_pdev = pci_get_device(id->vendor,
id->device, NULL);
i++;
id = &i82443bxgx_pci_tbl[i];
}
if (!mci_pdev) {
debugf0("i82443bxgx pci_get_device fail\n");
pci_rc = -ENODEV;
goto fail1;
}
pci_rc = i82443bxgx_edacmc_init_one(mci_pdev, i82443bxgx_pci_tbl);
if (pci_rc < 0) {
debugf0("i82443bxgx init fail\n");
pci_rc = -ENODEV;
goto fail1;
}
}
return 0;
fail1:
pci_unregister_driver(&i82443bxgx_edacmc_driver);
fail0:
if (mci_pdev != NULL)
pci_dev_put(mci_pdev);
return pci_rc;
}
static void __exit i82443bxgx_edacmc_exit(void)
{
pci_unregister_driver(&i82443bxgx_edacmc_driver);
if (!i82443bxgx_registered)
i82443bxgx_edacmc_remove_one(mci_pdev);
if (mci_pdev)
pci_dev_put(mci_pdev);
}
module_init(i82443bxgx_edacmc_init);