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authorViresh Kumar <viresh.kumar@linaro.org>2019-11-18 12:11:07 +0300
committerViresh Kumar <viresh.kumar@linaro.org>2019-12-10 13:26:56 +0300
commitba0033192145cbd4e70ef64552958b13d597eb9e (patch)
treeb250718e6bff03d27ad6f85e0bbb8359dc70f2ac /drivers/opp
parente42617b825f8073569da76dc4510bfa019b1c35a (diff)
downloadlinux-ba0033192145cbd4e70ef64552958b13d597eb9e.tar.xz
opp: Free static OPPs on errors while adding them
The static OPPs aren't getting freed properly, if errors occur while adding them. Fix that by calling _put_opp_list_kref() and putting their reference on failures. Fixes: 11e1a1648298 ("opp: Don't decrement uninitialized list_kref") Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Diffstat (limited to 'drivers/opp')
-rw-r--r--drivers/opp/of.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/opp/of.c b/drivers/opp/of.c
index 1cbb58240b80..1e5fcdee043c 100644
--- a/drivers/opp/of.c
+++ b/drivers/opp/of.c
@@ -678,15 +678,17 @@ static int _of_add_opp_table_v2(struct device *dev, struct opp_table *opp_table)
dev_err(dev, "%s: Failed to add OPP, %d\n", __func__,
ret);
of_node_put(np);
- return ret;
+ goto put_list_kref;
} else if (opp) {
count++;
}
}
/* There should be one of more OPP defined */
- if (WARN_ON(!count))
- return -ENOENT;
+ if (WARN_ON(!count)) {
+ ret = -ENOENT;
+ goto put_list_kref;
+ }
list_for_each_entry(opp, &opp_table->opp_list, node)
pstate_count += !!opp->pstate;
@@ -695,7 +697,8 @@ static int _of_add_opp_table_v2(struct device *dev, struct opp_table *opp_table)
if (pstate_count && pstate_count != count) {
dev_err(dev, "Not all nodes have performance state set (%d: %d)\n",
count, pstate_count);
- return -ENOENT;
+ ret = -ENOENT;
+ goto put_list_kref;
}
if (pstate_count)
@@ -704,6 +707,11 @@ static int _of_add_opp_table_v2(struct device *dev, struct opp_table *opp_table)
opp_table->parsed_static_opps = true;
return 0;
+
+put_list_kref:
+ _put_opp_list_kref(opp_table);
+
+ return ret;
}
/* Initializes OPP tables based on old-deprecated bindings */
@@ -738,6 +746,7 @@ static int _of_add_opp_table_v1(struct device *dev, struct opp_table *opp_table)
if (ret) {
dev_err(dev, "%s: Failed to add OPP %ld (%d)\n",
__func__, freq, ret);
+ _put_opp_list_kref(opp_table);
return ret;
}
nr -= 2;