On 05-12-18, 09:00, Stephen Boyd wrote:
> Here's a patch to squash in to fix those tiny problems. I left it as
> devm_ioremap_resource() because that has all the nice features of
> resource requesting inside and it didn't seem too bad to devm_iounmap()
> on the exit path.
>
> ---------8<--------------
>
> drivers/cpufreq/qcom-cpufreq-hw.c | 37 ++++++++++++++++++++++++++-----------
> 1 file changed, 26 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c
> b/drivers/cpufreq/qcom-cpufreq-hw.c
> index bcf9bb37298a..1e865e216839 100644
> --- a/drivers/cpufreq/qcom-cpufreq-hw.c
> +++ b/drivers/cpufreq/qcom-cpufreq-hw.c
> @@ -10,6 +10,7 @@
> #include <linux/module.h>
> #include <linux/of_address.h>
> #include <linux/of_platform.h>
> +#include <linux/slab.h>
>
> #define LUT_MAX_ENTRIES 40U
> #define LUT_SRC GENMASK(31, 30)
> @@ -77,8 +78,7 @@ static int qcom_cpufreq_hw_read_lut(struct device *dev,
> unsigned int max_cores = cpumask_weight(policy->cpus);
> struct cpufreq_frequency_table *table;
>
> - table = devm_kcalloc(dev, LUT_MAX_ENTRIES + 1,
> - sizeof(*table), GFP_KERNEL);
> + table = kcalloc(LUT_MAX_ENTRIES + 1, sizeof(*table), GFP_KERNEL);
> if (!table)
> return -ENOMEM;
>
> @@ -144,7 +144,7 @@ static void qcom_get_related_cpus(int index, struct
> cpumask *m)
>
> ret = of_parse_phandle_with_args(cpu_np, "qcom,freq-domain",
> "#freq-domain-cells", 0,
> - &args);
> + &args);
> of_node_put(cpu_np);
> if (ret < 0)
> continue;
> @@ -170,7 +170,6 @@ static int qcom_cpufreq_hw_cpu_init(struct cpufreq_policy
> *policy)
> ret = of_parse_phandle_with_args(cpu_np, "qcom,freq-domain",
> "#freq-domain-cells", 0, &args);
> of_node_put(cpu_np);
> -
> if (ret)
> return ret;
>
> @@ -184,13 +183,15 @@ static int qcom_cpufreq_hw_cpu_init(struct
> cpufreq_policy *policy)
> /* HW should be in enabled state to proceed */
> if (!(readl_relaxed(base + REG_ENABLE) & 0x1)) {
> dev_err(dev, "Domain-%d cpufreq hardware not enabled\n", index);
> - return -ENODEV;
> + ret = -ENODEV;
> + goto error;
> }
>
> qcom_get_related_cpus(index, policy->cpus);
> if (!cpumask_weight(policy->cpus)) {
> dev_err(dev, "Domain-%d failed to get related CPUs\n", index);
> - return -ENOENT;
> + ret = -ENOENT;
> + goto error;
> }
>
> policy->driver_data = base + REG_PERF_STATE;
> @@ -198,11 +199,25 @@ static int qcom_cpufreq_hw_cpu_init(struct
> cpufreq_policy *policy)
> ret = qcom_cpufreq_hw_read_lut(dev, policy, base);
> if (ret) {
> dev_err(dev, "Domain-%d failed to read LUT\n", index);
> - return ret;
> + goto error;
> }
>
> policy->fast_switch_possible = true;
>
> + return 0;
> +
> +error:
> + devm_iounmap(dev, base);
> + return ret;
> +}
> +
> +static int qcom_cpufreq_hw_cpu_exit(struct cpufreq_policy *policy)
> +{
> + void __iomem *base = policy->driver_data - REG_PERF_STATE;
> +
> + kfree(policy->freq_table);
> + devm_iounmap(&global_pdev->dev, base);
> +
> return 0;
> }
>
> @@ -219,6 +234,7 @@ static struct cpufreq_driver cpufreq_qcom_hw_driver = {
> .target_index = qcom_cpufreq_hw_target_index,
> .get = qcom_cpufreq_hw_get,
> .init = qcom_cpufreq_hw_cpu_init,
> + .exit = qcom_cpufreq_hw_cpu_exit,
> .fast_switch = qcom_cpufreq_hw_fast_switch,
> .name = "qcom-cpufreq-hw",
> .attr = qcom_cpufreq_hw_attr,
> @@ -248,12 +264,11 @@ static int qcom_cpufreq_hw_driver_probe(struct
> platform_device *pdev)
> ret = cpufreq_register_driver(&cpufreq_qcom_hw_driver);
> if (ret) {
> dev_err(&pdev->dev, "CPUFreq HW driver failed to register\n");
> - return ret;
> + } else {
> + dev_dbg(&pdev->dev, "QCOM CPUFreq HW driver initialized\n");
> }
>
> - dev_dbg(&pdev->dev, "QCOM CPUFreq HW driver initialized\n");
> -
> - return 0;
> + return ret;
> }
>
> static int qcom_cpufreq_hw_driver_remove(struct platform_device *pdev)
LGTM
--
viresh
