Home Home > GIT Browse
summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorCorey Minyard <cminyard@mvista.com>2018-02-28 08:09:49 -0600
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-04-19 08:55:08 +0200
commit351b3d90c18d88bb719739257cce42e2f13af9a1 (patch)
tree926509ecda027fbde5652d0b6ef406468e19e4bb
parent9bb8f59e6ba040a38ded403e154889b763f3cb64 (diff)
ipmi: Fix some error cleanup issues
commit cc095f0ac1f7c200e51a5c2a78a43c9f42049dbb upstream. device_remove_group() was called on any cleanup, even if the device attrs had not been added yet. That can occur in certain error scenarios, so add a flag to know if it has been added. Also make sure we remove the dev if we added it ourselves. Signed-off-by: Corey Minyard <cminyard@mvista.com> Cc: stable@vger.kernel.org # 4.15 Cc: Laura Abbott <labbott@redhat.com> Tested-by: Bill Perkins <wmp@grnwood.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/char/ipmi/ipmi_si_intf.c18
1 files changed, 14 insertions, 4 deletions
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index 7499b0cd8326..c33e579d8911 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -252,6 +252,9 @@ struct smi_info {
/* Default driver model device. */
struct platform_device *pdev;
+ /* Have we added the device group to the device? */
+ bool dev_group_added;
+
/* Counters and things for the proc filesystem. */
atomic_t stats[SI_NUM_STATS];
@@ -2025,8 +2028,8 @@ int ipmi_si_add_smi(struct si_sm_io *io)
if (initialized) {
rv = try_smi_init(new_smi);
if (rv) {
- mutex_unlock(&smi_infos_lock);
cleanup_one_si(new_smi);
+ mutex_unlock(&smi_infos_lock);
return rv;
}
}
@@ -2185,6 +2188,7 @@ static int try_smi_init(struct smi_info *new_smi)
rv);
goto out_err_stop_timer;
}
+ new_smi->dev_group_added = true;
rv = ipmi_register_smi(&handlers,
new_smi,
@@ -2238,7 +2242,10 @@ static int try_smi_init(struct smi_info *new_smi)
return 0;
out_err_remove_attrs:
- device_remove_group(new_smi->io.dev, &ipmi_si_dev_attr_group);
+ if (new_smi->dev_group_added) {
+ device_remove_group(new_smi->io.dev, &ipmi_si_dev_attr_group);
+ new_smi->dev_group_added = false;
+ }
dev_set_drvdata(new_smi->io.dev, NULL);
out_err_stop_timer:
@@ -2286,6 +2293,7 @@ out_err:
else
platform_device_put(new_smi->pdev);
new_smi->pdev = NULL;
+ new_smi->io.dev = NULL;
}
kfree(init_name);
@@ -2382,8 +2390,10 @@ static void cleanup_one_si(struct smi_info *to_clean)
}
}
- device_remove_group(to_clean->io.dev, &ipmi_si_dev_attr_group);
- dev_set_drvdata(to_clean->io.dev, NULL);
+ if (to_clean->dev_group_added)
+ device_remove_group(to_clean->io.dev, &ipmi_si_dev_attr_group);
+ if (to_clean->io.dev)
+ dev_set_drvdata(to_clean->io.dev, NULL);
list_del(&to_clean->link);