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authorBorislav Petkov <borislav.petkov@amd.com>2009-12-21 18:13:01 +0100
committerBorislav Petkov <borislav.petkov@amd.com>2009-12-24 11:07:07 +0100
commit56b34b91e22313294154cee0c16e294cf8a45b61 (patch)
tree59ae221911c7bef88711ba3054204e99d47f93a6
parent8f68ed9728193b1f2fb53ba06031b06bd8b3d1b4 (diff)
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amd64_edac: make driver loading more robust
Currently, the module does not initialize fully when the DIMMs aren't ECC but remains still loaded. Propagate the error when no instance of the driver is properly initialized and prevent further loading. Reorganize and polish error handling in amd64_edac_init() while at it. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
-rw-r--r--drivers/edac/amd64_edac.c23
1 files changed, 16 insertions, 7 deletions
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index fb0d36b4741..a8af27a7482 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -3014,25 +3014,29 @@ static void amd64_setup_pci_device(void)
static int __init amd64_edac_init(void)
{
int nb, err = -ENODEV;
+ bool load_ok = false;
edac_printk(KERN_INFO, EDAC_MOD_STR, EDAC_AMD64_VERSION "\n");
opstate_init();
if (cache_k8_northbridges() < 0)
- return err;
+ goto err_ret;
msrs = msrs_alloc();
+ if (!msrs)
+ goto err_ret;
err = pci_register_driver(&amd64_pci_driver);
if (err)
- return err;
+ goto err_pci;
/*
* At this point, the array 'pvt_lookup[]' contains pointers to alloc'd
* amd64_pvt structs. These will be used in the 2nd stage init function
* to finish initialization of the MC instances.
*/
+ err = -ENODEV;
for (nb = 0; nb < num_k8_northbridges; nb++) {
if (!pvt_lookup[nb])
continue;
@@ -3040,16 +3044,21 @@ static int __init amd64_edac_init(void)
err = amd64_init_2nd_stage(pvt_lookup[nb]);
if (err)
goto err_2nd_stage;
- }
- amd64_setup_pci_device();
+ load_ok = true;
+ }
- return 0;
+ if (load_ok) {
+ amd64_setup_pci_device();
+ return 0;
+ }
err_2nd_stage:
- debugf0("2nd stage failed\n");
pci_unregister_driver(&amd64_pci_driver);
-
+err_pci:
+ msrs_free(msrs);
+ msrs = NULL;
+err_ret:
return err;
}