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cpufreq: qcom-nvmem: fix memory leaks in probe error paths

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[ Upstream commit d01c84b97f ]

The code refactoring added new error paths between the np device node
allocation and the call to of_node_put(), which leads to memory leaks if
any of those errors occur.

Add the missing of_node_put() in the error paths that require it.

Cc: stable@vger.kernel.org
Fixes: 57f2f8b4aa ("cpufreq: qcom: Refactor the driver to make it easier to extend")
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Javier Carrasco 2024-05-23 23:24:59 +02:00 committed by Greg Kroah-Hartman
parent 51a45209a8
commit e3fd01a810
1 changed files with 10 additions and 3 deletions
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13
drivers/cpufreq/qcom-cpufreq-nvmem.c
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@ -249,23 +249,30 @@ static int qcom_cpufreq_probe(struct platform_device *pdev)
drv = devm_kzalloc(&pdev->dev, struct_size(drv, cpus, num_possible_cpus()), drv = devm_kzalloc(&pdev->dev, struct_size(drv, cpus, num_possible_cpus()),
GFP_KERNEL); GFP_KERNEL);
if (!drv) if (!drv) {
of_node_put(np);
return -ENOMEM; return -ENOMEM;
}
match = pdev->dev.platform_data; match = pdev->dev.platform_data;
drv->data = match->data; drv->data = match->data;
if (!drv->data) if (!drv->data) {
of_node_put(np);
return -ENODEV; return -ENODEV;
}
if (drv->data->get_version) { if (drv->data->get_version) {
speedbin_nvmem = of_nvmem_cell_get(np, NULL); speedbin_nvmem = of_nvmem_cell_get(np, NULL);
if (IS_ERR(speedbin_nvmem)) if (IS_ERR(speedbin_nvmem)) {
of_node_put(np);
return dev_err_probe(cpu_dev, PTR_ERR(speedbin_nvmem), return dev_err_probe(cpu_dev, PTR_ERR(speedbin_nvmem),
"Could not get nvmem cell\n"); "Could not get nvmem cell\n");
}
ret = drv->data->get_version(cpu_dev, ret = drv->data->get_version(cpu_dev,
speedbin_nvmem, &pvs_name, drv); speedbin_nvmem, &pvs_name, drv);
if (ret) { if (ret) {
of_node_put(np);
nvmem_cell_put(speedbin_nvmem); nvmem_cell_put(speedbin_nvmem);
return ret; return ret;
} }