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opp: Free static OPPs on errors while adding them 

[ Upstream commit ba00331921 ]

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: 11e1a16482 ("opp: Don't decrement uninitialized list_kref")
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Viresh Kumar 2019-11-18 14:41:07 +05:30 committed by Greg Kroah-Hartman
parent ef6b35dfe1
commit 5fed8c513a
1 changed files with 13 additions and 4 deletions
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17
drivers/opp/of.c
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@ -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;