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cpufreq: qcom-nvmem: Simplify driver data allocation

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[ Upstream commit 2a5d46c3ad ]

Simplify the allocation and cleanup of driver data by using devm
together with a flexible array. Prepare for adding additional per-CPU
data by defining a struct qcom_cpufreq_drv_cpu instead of storing the
opp_tokens directly.

Signed-off-by: Stephan Gerhold <stephan.gerhold@kernkonzept.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Stable-dep-of: d01c84b97f ("cpufreq: qcom-nvmem: fix memory leaks in probe error paths")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Stephan Gerhold 2023-10-18 10:06:02 +02:00 committed by Greg Kroah-Hartman
parent df7363307e
commit 51a45209a8
1 changed files with 18 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
drivers/cpufreq/qcom-cpufreq-nvmem.c
View File

@ -40,10 +40,14 @@ struct qcom_cpufreq_match_data {
const char **genpd_names; const char **genpd_names;
}; };
struct qcom_cpufreq_drv_cpu {
int opp_token;
};
struct qcom_cpufreq_drv { struct qcom_cpufreq_drv {
int *opp_tokens;
u32 versions; u32 versions;
const struct qcom_cpufreq_match_data *data; const struct qcom_cpufreq_match_data *data;
struct qcom_cpufreq_drv_cpu cpus[];
}; };
static struct platform_device *cpufreq_dt_pdev, *cpufreq_pdev; static struct platform_device *cpufreq_dt_pdev, *cpufreq_pdev;
@ -243,42 +247,32 @@ static int qcom_cpufreq_probe(struct platform_device *pdev)
return -ENOENT; return -ENOENT;
} }
drv = kzalloc(sizeof(*drv), GFP_KERNEL); drv = devm_kzalloc(&pdev->dev, struct_size(drv, cpus, num_possible_cpus()),
GFP_KERNEL);
if (!drv) if (!drv)
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)
ret = -ENODEV; return -ENODEV;
goto free_drv;
}
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))
ret = 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");
goto free_drv;
}
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) {
nvmem_cell_put(speedbin_nvmem); nvmem_cell_put(speedbin_nvmem);
goto free_drv; return ret;
} }
nvmem_cell_put(speedbin_nvmem); nvmem_cell_put(speedbin_nvmem);
} }
of_node_put(np); of_node_put(np);
drv->opp_tokens = kcalloc(num_possible_cpus(), sizeof(*drv->opp_tokens),
GFP_KERNEL);
if (!drv->opp_tokens) {
ret = -ENOMEM;
goto free_drv;
}
for_each_possible_cpu(cpu) { for_each_possible_cpu(cpu) {
struct dev_pm_opp_config config = { struct dev_pm_opp_config config = {
.supported_hw = NULL, .supported_hw = NULL,
@ -304,9 +298,9 @@ static int qcom_cpufreq_probe(struct platform_device *pdev)
} }
if (config.supported_hw || config.genpd_names) { if (config.supported_hw || config.genpd_names) {
drv->opp_tokens[cpu] = dev_pm_opp_set_config(cpu_dev, &config); drv->cpus[cpu].opp_token = dev_pm_opp_set_config(cpu_dev, &config);
if (drv->opp_tokens[cpu] < 0) { if (drv->cpus[cpu].opp_token < 0) {
ret = drv->opp_tokens[cpu]; ret = drv->cpus[cpu].opp_token;
dev_err(cpu_dev, "Failed to set OPP config\n"); dev_err(cpu_dev, "Failed to set OPP config\n");
goto free_opp; goto free_opp;
} }
@ -325,11 +319,7 @@ static int qcom_cpufreq_probe(struct platform_device *pdev)
free_opp: free_opp:
for_each_possible_cpu(cpu) for_each_possible_cpu(cpu)
dev_pm_opp_clear_config(drv->opp_tokens[cpu]); dev_pm_opp_clear_config(drv->cpus[cpu].opp_token);
kfree(drv->opp_tokens);
free_drv:
kfree(drv);
return ret; return ret;
} }
@ -341,10 +331,7 @@ static void qcom_cpufreq_remove(struct platform_device *pdev)
platform_device_unregister(cpufreq_dt_pdev); platform_device_unregister(cpufreq_dt_pdev);
for_each_possible_cpu(cpu) for_each_possible_cpu(cpu)
dev_pm_opp_clear_config(drv->opp_tokens[cpu]); dev_pm_opp_clear_config(drv->cpus[cpu].opp_token);
kfree(drv->opp_tokens);
kfree(drv);
} }
static struct platform_driver qcom_cpufreq_driver = { static struct platform_driver qcom_cpufreq_driver = {