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| author | Lans Zhang <jia.zhang@windriver.com> | 2012-12-24 14:01:34 +0100 |
|---|---|---|
| committer | Borislav Petkov <bpetkov@suse.de> | 2013-01-07 17:43:00 +0100 |
| commit | 44d22e2404b3ce93a314654962d31acc8afcdd62 (patch) | |
| tree | f3d254d755d99d723caa4caff200455d19f52b27 | |
| parent | 5445166384755adc39c772acccca87ad5747be52 (diff) | |
| download | linux-44d22e2404b3ce93a314654962d31acc8afcdd62.tar.gz linux-44d22e2404b3ce93a314654962d31acc8afcdd62.tar.bz2 linux-44d22e2404b3ce93a314654962d31acc8afcdd62.zip | |
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>
| -rw-r--r-- | drivers/edac/edac_mc_sysfs.c | 18 |
1 files changed, 6 insertions, 12 deletions
diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c index a3b0119ecb00..0ca1ca71157f 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(); } |