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authorLans Zhang <jia.zhang@windriver.com>2012-12-24 14:01:34 +0100
committerBorislav Petkov <bpetkov@suse.de>2013-01-07 17:43:00 +0100
commit44d22e2404b3ce93a314654962d31acc8afcdd62 (patch)
treef3d254d755d99d723caa4caff200455d19f52b27 /drivers
parent5445166384755adc39c772acccca87ad5747be52 (diff)
downloadvexpress-lsk-44d22e2404b3ce93a314654962d31acc8afcdd62.tar.gz
EDAC: Cleanup device deregistering path
Use device_unregister to replace put_device + device_del for cleanup, and fix the potential use after free. Signed-off-by: Lans Zhang <jia.zhang@windriver.com> Signed-off-by: Borislav Petkov <bp@alien8.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/edac/edac_mc_sysfs.c18
1 files changed, 6 insertions, 12 deletions
diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
index a3b0119ecb0..0ca1ca71157 100644
--- a/drivers/edac/edac_mc_sysfs.c
+++ b/drivers/edac/edac_mc_sysfs.c
@@ -472,8 +472,7 @@ static void edac_delete_csrow_objects(struct mem_ctl_info *mci)
device_remove_file(&csrow->dev,
dynamic_csrow_ce_count_attr[chan]);
}
- put_device(&mci->csrows[i]->dev);
- device_del(&mci->csrows[i]->dev);
+ device_unregister(&mci->csrows[i]->dev);
}
}
#endif
@@ -1055,11 +1054,9 @@ fail:
struct dimm_info *dimm = mci->dimms[i];
if (dimm->nr_pages == 0)
continue;
- put_device(&dimm->dev);
- device_del(&dimm->dev);
+ device_unregister(&dimm->dev);
}
- put_device(&mci->dev);
- device_del(&mci->dev);
+ device_unregister(&mci->dev);
bus_unregister(&mci->bus);
kfree(mci->bus.name);
return err;
@@ -1086,16 +1083,14 @@ void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci)
if (dimm->nr_pages == 0)
continue;
edac_dbg(0, "removing device %s\n", dev_name(&dimm->dev));
- put_device(&dimm->dev);
- device_del(&dimm->dev);
+ device_unregister(&dimm->dev);
}
}
void edac_unregister_sysfs(struct mem_ctl_info *mci)
{
edac_dbg(1, "Unregistering device %s\n", dev_name(&mci->dev));
- put_device(&mci->dev);
- device_del(&mci->dev);
+ device_unregister(&mci->dev);
bus_unregister(&mci->bus);
kfree(mci->bus.name);
}
@@ -1159,7 +1154,6 @@ int __init edac_mc_sysfs_init(void)
void __exit edac_mc_sysfs_exit(void)
{
- device_del(mci_pdev);
- put_device(mci_pdev);
+ device_unregister(mci_pdev);
edac_put_sysfs_subsys();
}