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PM / OPP: Free resources and properly return error on failure
_of_init_opp_table_v2() isn't freeing up resources on some errors and the error values returned are also not correct always. This fixes following problems: - Return -ENOENT, if no entries are found in the table. - Use IS_ERR() to properly check return value of _find_device_opp(). - Return error value with PTR_ERR() in above case. - Free table if _find_device_opp() fails. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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parent
21c36d3571
commit
1f821ed7af
1 changed files with 17 additions and 15 deletions
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@ -1323,28 +1323,30 @@ static int _of_init_opp_table_v2(struct device *dev,
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if (ret) {
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dev_err(dev, "%s: Failed to add OPP, %d\n", __func__,
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ret);
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break;
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goto free_table;
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}
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}
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/* There should be one of more OPP defined */
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if (WARN_ON(!count))
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if (WARN_ON(!count)) {
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ret = -ENOENT;
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goto put_opp_np;
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if (!ret) {
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if (!dev_opp) {
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dev_opp = _find_device_opp(dev);
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if (WARN_ON(!dev_opp))
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goto put_opp_np;
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}
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dev_opp->np = opp_np;
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dev_opp->shared_opp = of_property_read_bool(opp_np,
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"opp-shared");
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} else {
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of_free_opp_table(dev);
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}
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dev_opp = _find_device_opp(dev);
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if (WARN_ON(IS_ERR(dev_opp))) {
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ret = PTR_ERR(dev_opp);
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goto free_table;
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}
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dev_opp->np = opp_np;
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dev_opp->shared_opp = of_property_read_bool(opp_np, "opp-shared");
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of_node_put(opp_np);
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return 0;
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free_table:
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of_free_opp_table(dev);
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put_opp_np:
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of_node_put(opp_np);
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