* Re: [PATCH 4/4] cpufreq: mt8173: move resources allocation into ->probe()
@ 2015-11-30 3:02 Ricky Liang
2015-11-30 5:32 ` Viresh Kumar
0 siblings, 1 reply; 7+ messages in thread
From: Ricky Liang @ 2015-11-30 3:02 UTC (permalink / raw)
To: Pi-Cheng Chen
Cc: Viresh Kumar, Matthias Brugger, linaro-kernel,
moderated list:ARM/Mediatek SoC...,
moderated list:ARM/Mediatek SoC...,
linux-pm
Hi Pi-Cheng,
On Sun, Nov 29, 2015 at 4:31 PM, Pi-Cheng Chen <pi-cheng.chen@linaro.org> wrote:
> Since the return value of ->init() of cpufreq driver is not propagated
> to the device driver model now, move resources allocation into
> ->probe() to handle -EPROBE_DEFER properly.
>
> Signed-off-by: Pi-Cheng Chen <pi-cheng.chen@linaro.org>
> ---
> drivers/cpufreq/mt8173-cpufreq.c | 94 ++++++++++++++++++++++++++++------------
> 1 file changed, 67 insertions(+), 27 deletions(-)
>
> diff --git a/drivers/cpufreq/mt8173-cpufreq.c b/drivers/cpufreq/mt8173-cpufreq.c
> index 9d0fe37..1142625 100644
> --- a/drivers/cpufreq/mt8173-cpufreq.c
> +++ b/drivers/cpufreq/mt8173-cpufreq.c
> @@ -41,16 +41,35 @@
> * the original PLL becomes stable at target frequency.
> */
> struct mtk_cpu_dvfs_info {
> + struct cpumask cpus;
> struct device *cpu_dev;
> struct regulator *proc_reg;
> struct regulator *sram_reg;
> struct clk *cpu_clk;
> struct clk *inter_clk;
> struct thermal_cooling_device *cdev;
> + struct list_head list_head;
> int intermediate_voltage;
> bool need_voltage_tracking;
> };
>
> +static LIST_HEAD(dvfs_info_list);
> +
> +struct mtk_cpu_dvfs_info *get_dvfs_info(int cpu)
> +{
> + struct mtk_cpu_dvfs_info *info;
> + struct list_head *list;
> +
> + list_for_each(list, &dvfs_info_list) {
> + info = list_entry(list, struct mtk_cpu_dvfs_info, list_head);
> +
> + if (cpumask_test_cpu(cpu, &info->cpus))
> + return info;
> + }
> +
> + return NULL;
> +}
> +
> static int mtk_cpufreq_voltage_tracking(struct mtk_cpu_dvfs_info *info,
> int new_vproc)
> {
> @@ -402,6 +421,9 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu)
> */
> info->need_voltage_tracking = !IS_ERR(sram_reg);
>
> + /* CPUs in the same cluster share a clock and power domain. */
> + cpumask_copy(&info->cpus, &cpu_topology[cpu].core_sibling);
> +
> return 0;
>
> out_free_opp_table:
> @@ -440,47 +462,32 @@ static int mtk_cpufreq_init(struct cpufreq_policy *policy)
> struct cpufreq_frequency_table *freq_table;
> int ret;
>
> - info = kzalloc(sizeof(*info), GFP_KERNEL);
> - if (!info)
> - return -ENOMEM;
> -
> - ret = mtk_cpu_dvfs_info_init(info, policy->cpu);
> - if (ret) {
> - pr_err("%s failed to initialize dvfs info for cpu%d\n",
> - __func__, policy->cpu);
> - goto out_free_dvfs_info;
> + info = get_dvfs_info(policy->cpu);
> + if (!info) {
> + pr_err("dvfs info for cpu%d is not initialized.\n",
> + policy->cpu);
> + return -EINVAL;
> }
>
> ret = dev_pm_opp_init_cpufreq_table(info->cpu_dev, &freq_table);
> if (ret) {
> pr_err("failed to init cpufreq table for cpu%d: %d\n",
> policy->cpu, ret);
> - goto out_release_dvfs_info;
> + return ret;
> }
>
> ret = cpufreq_table_validate_and_show(policy, freq_table);
> if (ret) {
> pr_err("%s: invalid frequency table: %d\n", __func__, ret);
> - goto out_free_cpufreq_table;
> + dev_pm_opp_free_cpufreq_table(info->cpu_dev, &freq_table);
> + return ret;
> }
>
> - /* CPUs in the same cluster share a clock and power domain. */
> - cpumask_copy(policy->cpus, &cpu_topology[policy->cpu].core_sibling);
> + cpumask_copy(policy->cpus, &info->cpus);
> policy->driver_data = info;
> policy->clk = info->cpu_clk;
>
> return 0;
> -
> -out_free_cpufreq_table:
> - dev_pm_opp_free_cpufreq_table(info->cpu_dev, &freq_table);
> -
> -out_release_dvfs_info:
> - mtk_cpu_dvfs_info_release(info);
> -
> -out_free_dvfs_info:
> - kfree(info);
> -
> - return ret;
> }
>
> static int mtk_cpufreq_exit(struct cpufreq_policy *policy)
> @@ -489,8 +496,6 @@ static int mtk_cpufreq_exit(struct cpufreq_policy *policy)
>
> cpufreq_cooling_unregister(info->cdev);
> dev_pm_opp_free_cpufreq_table(info->cpu_dev, &policy->freq_table);
> - mtk_cpu_dvfs_info_release(info);
> - kfree(info);
>
> return 0;
> }
> @@ -510,12 +515,47 @@ static struct cpufreq_driver mt8173_cpufreq_driver = {
>
> static int mt8173_cpufreq_probe(struct platform_device *pdev)
> {
> - int ret;
> + struct mtk_cpu_dvfs_info *info;
> + struct list_head *list, *tmp;
> + int cpu, ret;
> +
> + for_each_possible_cpu(cpu) {
> + info = get_dvfs_info(cpu);
> + if (info)
> + continue;
> +
> + info = kzalloc(sizeof(*info), GFP_KERNEL);
> + if (!info) {
> + ret = -ENOMEM;
> + goto release_dvfs_info_list;
> + }
> +
> + ret = mtk_cpu_dvfs_info_init(info, cpu);
> + if (ret) {
> + pr_err("%s failed to initialize dvfs info for cpu%d\n",
> + __func__, cpu);
> + kfree(info);
> + goto release_dvfs_info_list;
> + }
> +
> + list_add(&info->list_head, &dvfs_info_list);
> + }
>
> ret = cpufreq_register_driver(&mt8173_cpufreq_driver);
> if (ret)
> pr_err("failed to register mtk cpufreq driver\n");
I think you want "return ret;" inside the if block.
>
> + return 0;
> +
> +release_dvfs_info_list:
> + list_for_each_safe(list, tmp, &dvfs_info_list) {
> + info = list_entry(list, struct mtk_cpu_dvfs_info, list_head);
> +
> + mtk_cpu_dvfs_info_release(info);
> + list_del(list);
> + kfree(info);
> + }
> +
> return ret;
> }
>
> --
> 1.9.1
>
>
> _______________________________________________
> Linux-mediatek mailing list
> Linux-mediatek@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-mediatek
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH 4/4] cpufreq: mt8173: move resources allocation into ->probe()
2015-11-30 3:02 [PATCH 4/4] cpufreq: mt8173: move resources allocation into ->probe() Ricky Liang
@ 2015-11-30 5:32 ` Viresh Kumar
0 siblings, 0 replies; 7+ messages in thread
From: Viresh Kumar @ 2015-11-30 5:32 UTC (permalink / raw)
To: Ricky Liang
Cc: Pi-Cheng Chen, Matthias Brugger, linaro-kernel,
moderated list:ARM/Mediatek SoC...,
moderated list:ARM/Mediatek SoC...,
linux-pm
On 30-11-15, 11:02, Ricky Liang wrote:
> On Sun, Nov 29, 2015 at 4:31 PM, Pi-Cheng Chen <pi-cheng.chen@linaro.org> wrote:
> > ret = cpufreq_register_driver(&mt8173_cpufreq_driver);
> > if (ret)
> > pr_err("failed to register mtk cpufreq driver\n");
>
> I think you want "return ret;" inside the if block.
Not just that, he needs to jump to release_dvfs_info_list.
> >
> > + return 0;
> > +
> > +release_dvfs_info_list:
> > + list_for_each_safe(list, tmp, &dvfs_info_list) {
> > + info = list_entry(list, struct mtk_cpu_dvfs_info, list_head);
> > +
> > + mtk_cpu_dvfs_info_release(info);
> > + list_del(list);
> > + kfree(info);
> > + }
> > +
> > return ret;
> > }
--
viresh
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH 4/4] cpufreq: mt8173: move resources allocation into ->probe()
@ 2015-11-30 5:32 ` Viresh Kumar
0 siblings, 0 replies; 7+ messages in thread
From: Viresh Kumar @ 2015-11-30 5:32 UTC (permalink / raw)
To: linux-arm-kernel
On 30-11-15, 11:02, Ricky Liang wrote:
> On Sun, Nov 29, 2015 at 4:31 PM, Pi-Cheng Chen <pi-cheng.chen@linaro.org> wrote:
> > ret = cpufreq_register_driver(&mt8173_cpufreq_driver);
> > if (ret)
> > pr_err("failed to register mtk cpufreq driver\n");
>
> I think you want "return ret;" inside the if block.
Not just that, he needs to jump to release_dvfs_info_list.
> >
> > + return 0;
> > +
> > +release_dvfs_info_list:
> > + list_for_each_safe(list, tmp, &dvfs_info_list) {
> > + info = list_entry(list, struct mtk_cpu_dvfs_info, list_head);
> > +
> > + mtk_cpu_dvfs_info_release(info);
> > + list_del(list);
> > + kfree(info);
> > + }
> > +
> > return ret;
> > }
--
viresh
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH 4/4] cpufreq: mt8173: move resources allocation into ->probe()
2015-11-30 5:32 ` Viresh Kumar
@ 2015-11-30 14:38 ` Pi-Cheng Chen
-1 siblings, 0 replies; 7+ messages in thread
From: Pi-Cheng Chen @ 2015-11-30 14:38 UTC (permalink / raw)
To: Viresh Kumar, Ricky Liang
Cc: Matthias Brugger, Linaro Kernel Mailman List,
moderated list:ARM/Mediatek SoC...,
moderated list:ARM/Mediatek SoC...,
linux-pm
On Mon, Nov 30, 2015 at 1:32 PM, Viresh Kumar <viresh.kumar@linaro.org> wrote:
> On 30-11-15, 11:02, Ricky Liang wrote:
>> On Sun, Nov 29, 2015 at 4:31 PM, Pi-Cheng Chen <pi-cheng.chen@linaro.org> wrote:
>> > ret = cpufreq_register_driver(&mt8173_cpufreq_driver);
>> > if (ret)
>> > pr_err("failed to register mtk cpufreq driver\n");
>>
>> I think you want "return ret;" inside the if block.
>
> Not just that, he needs to jump to release_dvfs_info_list.
Hi Ricky and Viresh,
Thanks for reviewing.
I failed to check this error case handling.
I will fix it and resend again.
Best Regards,
Pi-Cheng
>
>> >
>> > + return 0;
>> > +
>> > +release_dvfs_info_list:
>> > + list_for_each_safe(list, tmp, &dvfs_info_list) {
>> > + info = list_entry(list, struct mtk_cpu_dvfs_info, list_head);
>> > +
>> > + mtk_cpu_dvfs_info_release(info);
>> > + list_del(list);
>> > + kfree(info);
>> > + }
>> > +
>> > return ret;
>> > }
>
> --
> viresh
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH 4/4] cpufreq: mt8173: move resources allocation into ->probe()
@ 2015-11-30 14:38 ` Pi-Cheng Chen
0 siblings, 0 replies; 7+ messages in thread
From: Pi-Cheng Chen @ 2015-11-30 14:38 UTC (permalink / raw)
To: linux-arm-kernel
On Mon, Nov 30, 2015 at 1:32 PM, Viresh Kumar <viresh.kumar@linaro.org> wrote:
> On 30-11-15, 11:02, Ricky Liang wrote:
>> On Sun, Nov 29, 2015 at 4:31 PM, Pi-Cheng Chen <pi-cheng.chen@linaro.org> wrote:
>> > ret = cpufreq_register_driver(&mt8173_cpufreq_driver);
>> > if (ret)
>> > pr_err("failed to register mtk cpufreq driver\n");
>>
>> I think you want "return ret;" inside the if block.
>
> Not just that, he needs to jump to release_dvfs_info_list.
Hi Ricky and Viresh,
Thanks for reviewing.
I failed to check this error case handling.
I will fix it and resend again.
Best Regards,
Pi-Cheng
>
>> >
>> > + return 0;
>> > +
>> > +release_dvfs_info_list:
>> > + list_for_each_safe(list, tmp, &dvfs_info_list) {
>> > + info = list_entry(list, struct mtk_cpu_dvfs_info, list_head);
>> > +
>> > + mtk_cpu_dvfs_info_release(info);
>> > + list_del(list);
>> > + kfree(info);
>> > + }
>> > +
>> > return ret;
>> > }
>
> --
> viresh
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH 4/4] cpufreq: mt8173: move resources allocation into ->probe()
2015-11-29 8:31 [PATCH 1/4] cpufreq: mt8173: add CPUFREQ_HAVE_GOVERNOR_PER_POLICY flag Pi-Cheng Chen
@ 2015-11-29 8:31 ` Pi-Cheng Chen
0 siblings, 0 replies; 7+ messages in thread
From: Pi-Cheng Chen @ 2015-11-29 8:31 UTC (permalink / raw)
To: Viresh Kumar, Matthias Brugger
Cc: Daniel Kurtz, linux-mediatek, linaro-kernel, linux-arm-kernel, linux-pm
Since the return value of ->init() of cpufreq driver is not propagated
to the device driver model now, move resources allocation into
->probe() to handle -EPROBE_DEFER properly.
Signed-off-by: Pi-Cheng Chen <pi-cheng.chen@linaro.org>
---
drivers/cpufreq/mt8173-cpufreq.c | 94 ++++++++++++++++++++++++++++------------
1 file changed, 67 insertions(+), 27 deletions(-)
diff --git a/drivers/cpufreq/mt8173-cpufreq.c b/drivers/cpufreq/mt8173-cpufreq.c
index 9d0fe37..1142625 100644
--- a/drivers/cpufreq/mt8173-cpufreq.c
+++ b/drivers/cpufreq/mt8173-cpufreq.c
@@ -41,16 +41,35 @@
* the original PLL becomes stable at target frequency.
*/
struct mtk_cpu_dvfs_info {
+ struct cpumask cpus;
struct device *cpu_dev;
struct regulator *proc_reg;
struct regulator *sram_reg;
struct clk *cpu_clk;
struct clk *inter_clk;
struct thermal_cooling_device *cdev;
+ struct list_head list_head;
int intermediate_voltage;
bool need_voltage_tracking;
};
+static LIST_HEAD(dvfs_info_list);
+
+struct mtk_cpu_dvfs_info *get_dvfs_info(int cpu)
+{
+ struct mtk_cpu_dvfs_info *info;
+ struct list_head *list;
+
+ list_for_each(list, &dvfs_info_list) {
+ info = list_entry(list, struct mtk_cpu_dvfs_info, list_head);
+
+ if (cpumask_test_cpu(cpu, &info->cpus))
+ return info;
+ }
+
+ return NULL;
+}
+
static int mtk_cpufreq_voltage_tracking(struct mtk_cpu_dvfs_info *info,
int new_vproc)
{
@@ -402,6 +421,9 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu)
*/
info->need_voltage_tracking = !IS_ERR(sram_reg);
+ /* CPUs in the same cluster share a clock and power domain. */
+ cpumask_copy(&info->cpus, &cpu_topology[cpu].core_sibling);
+
return 0;
out_free_opp_table:
@@ -440,47 +462,32 @@ static int mtk_cpufreq_init(struct cpufreq_policy *policy)
struct cpufreq_frequency_table *freq_table;
int ret;
- info = kzalloc(sizeof(*info), GFP_KERNEL);
- if (!info)
- return -ENOMEM;
-
- ret = mtk_cpu_dvfs_info_init(info, policy->cpu);
- if (ret) {
- pr_err("%s failed to initialize dvfs info for cpu%d\n",
- __func__, policy->cpu);
- goto out_free_dvfs_info;
+ info = get_dvfs_info(policy->cpu);
+ if (!info) {
+ pr_err("dvfs info for cpu%d is not initialized.\n",
+ policy->cpu);
+ return -EINVAL;
}
ret = dev_pm_opp_init_cpufreq_table(info->cpu_dev, &freq_table);
if (ret) {
pr_err("failed to init cpufreq table for cpu%d: %d\n",
policy->cpu, ret);
- goto out_release_dvfs_info;
+ return ret;
}
ret = cpufreq_table_validate_and_show(policy, freq_table);
if (ret) {
pr_err("%s: invalid frequency table: %d\n", __func__, ret);
- goto out_free_cpufreq_table;
+ dev_pm_opp_free_cpufreq_table(info->cpu_dev, &freq_table);
+ return ret;
}
- /* CPUs in the same cluster share a clock and power domain. */
- cpumask_copy(policy->cpus, &cpu_topology[policy->cpu].core_sibling);
+ cpumask_copy(policy->cpus, &info->cpus);
policy->driver_data = info;
policy->clk = info->cpu_clk;
return 0;
-
-out_free_cpufreq_table:
- dev_pm_opp_free_cpufreq_table(info->cpu_dev, &freq_table);
-
-out_release_dvfs_info:
- mtk_cpu_dvfs_info_release(info);
-
-out_free_dvfs_info:
- kfree(info);
-
- return ret;
}
static int mtk_cpufreq_exit(struct cpufreq_policy *policy)
@@ -489,8 +496,6 @@ static int mtk_cpufreq_exit(struct cpufreq_policy *policy)
cpufreq_cooling_unregister(info->cdev);
dev_pm_opp_free_cpufreq_table(info->cpu_dev, &policy->freq_table);
- mtk_cpu_dvfs_info_release(info);
- kfree(info);
return 0;
}
@@ -510,12 +515,47 @@ static struct cpufreq_driver mt8173_cpufreq_driver = {
static int mt8173_cpufreq_probe(struct platform_device *pdev)
{
- int ret;
+ struct mtk_cpu_dvfs_info *info;
+ struct list_head *list, *tmp;
+ int cpu, ret;
+
+ for_each_possible_cpu(cpu) {
+ info = get_dvfs_info(cpu);
+ if (info)
+ continue;
+
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info) {
+ ret = -ENOMEM;
+ goto release_dvfs_info_list;
+ }
+
+ ret = mtk_cpu_dvfs_info_init(info, cpu);
+ if (ret) {
+ pr_err("%s failed to initialize dvfs info for cpu%d\n",
+ __func__, cpu);
+ kfree(info);
+ goto release_dvfs_info_list;
+ }
+
+ list_add(&info->list_head, &dvfs_info_list);
+ }
ret = cpufreq_register_driver(&mt8173_cpufreq_driver);
if (ret)
pr_err("failed to register mtk cpufreq driver\n");
+ return 0;
+
+release_dvfs_info_list:
+ list_for_each_safe(list, tmp, &dvfs_info_list) {
+ info = list_entry(list, struct mtk_cpu_dvfs_info, list_head);
+
+ mtk_cpu_dvfs_info_release(info);
+ list_del(list);
+ kfree(info);
+ }
+
return ret;
}
--
1.9.1
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [PATCH 4/4] cpufreq: mt8173: move resources allocation into ->probe()
@ 2015-11-29 8:31 ` Pi-Cheng Chen
0 siblings, 0 replies; 7+ messages in thread
From: Pi-Cheng Chen @ 2015-11-29 8:31 UTC (permalink / raw)
To: linux-arm-kernel
Since the return value of ->init() of cpufreq driver is not propagated
to the device driver model now, move resources allocation into
->probe() to handle -EPROBE_DEFER properly.
Signed-off-by: Pi-Cheng Chen <pi-cheng.chen@linaro.org>
---
drivers/cpufreq/mt8173-cpufreq.c | 94 ++++++++++++++++++++++++++++------------
1 file changed, 67 insertions(+), 27 deletions(-)
diff --git a/drivers/cpufreq/mt8173-cpufreq.c b/drivers/cpufreq/mt8173-cpufreq.c
index 9d0fe37..1142625 100644
--- a/drivers/cpufreq/mt8173-cpufreq.c
+++ b/drivers/cpufreq/mt8173-cpufreq.c
@@ -41,16 +41,35 @@
* the original PLL becomes stable at target frequency.
*/
struct mtk_cpu_dvfs_info {
+ struct cpumask cpus;
struct device *cpu_dev;
struct regulator *proc_reg;
struct regulator *sram_reg;
struct clk *cpu_clk;
struct clk *inter_clk;
struct thermal_cooling_device *cdev;
+ struct list_head list_head;
int intermediate_voltage;
bool need_voltage_tracking;
};
+static LIST_HEAD(dvfs_info_list);
+
+struct mtk_cpu_dvfs_info *get_dvfs_info(int cpu)
+{
+ struct mtk_cpu_dvfs_info *info;
+ struct list_head *list;
+
+ list_for_each(list, &dvfs_info_list) {
+ info = list_entry(list, struct mtk_cpu_dvfs_info, list_head);
+
+ if (cpumask_test_cpu(cpu, &info->cpus))
+ return info;
+ }
+
+ return NULL;
+}
+
static int mtk_cpufreq_voltage_tracking(struct mtk_cpu_dvfs_info *info,
int new_vproc)
{
@@ -402,6 +421,9 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu)
*/
info->need_voltage_tracking = !IS_ERR(sram_reg);
+ /* CPUs in the same cluster share a clock and power domain. */
+ cpumask_copy(&info->cpus, &cpu_topology[cpu].core_sibling);
+
return 0;
out_free_opp_table:
@@ -440,47 +462,32 @@ static int mtk_cpufreq_init(struct cpufreq_policy *policy)
struct cpufreq_frequency_table *freq_table;
int ret;
- info = kzalloc(sizeof(*info), GFP_KERNEL);
- if (!info)
- return -ENOMEM;
-
- ret = mtk_cpu_dvfs_info_init(info, policy->cpu);
- if (ret) {
- pr_err("%s failed to initialize dvfs info for cpu%d\n",
- __func__, policy->cpu);
- goto out_free_dvfs_info;
+ info = get_dvfs_info(policy->cpu);
+ if (!info) {
+ pr_err("dvfs info for cpu%d is not initialized.\n",
+ policy->cpu);
+ return -EINVAL;
}
ret = dev_pm_opp_init_cpufreq_table(info->cpu_dev, &freq_table);
if (ret) {
pr_err("failed to init cpufreq table for cpu%d: %d\n",
policy->cpu, ret);
- goto out_release_dvfs_info;
+ return ret;
}
ret = cpufreq_table_validate_and_show(policy, freq_table);
if (ret) {
pr_err("%s: invalid frequency table: %d\n", __func__, ret);
- goto out_free_cpufreq_table;
+ dev_pm_opp_free_cpufreq_table(info->cpu_dev, &freq_table);
+ return ret;
}
- /* CPUs in the same cluster share a clock and power domain. */
- cpumask_copy(policy->cpus, &cpu_topology[policy->cpu].core_sibling);
+ cpumask_copy(policy->cpus, &info->cpus);
policy->driver_data = info;
policy->clk = info->cpu_clk;
return 0;
-
-out_free_cpufreq_table:
- dev_pm_opp_free_cpufreq_table(info->cpu_dev, &freq_table);
-
-out_release_dvfs_info:
- mtk_cpu_dvfs_info_release(info);
-
-out_free_dvfs_info:
- kfree(info);
-
- return ret;
}
static int mtk_cpufreq_exit(struct cpufreq_policy *policy)
@@ -489,8 +496,6 @@ static int mtk_cpufreq_exit(struct cpufreq_policy *policy)
cpufreq_cooling_unregister(info->cdev);
dev_pm_opp_free_cpufreq_table(info->cpu_dev, &policy->freq_table);
- mtk_cpu_dvfs_info_release(info);
- kfree(info);
return 0;
}
@@ -510,12 +515,47 @@ static struct cpufreq_driver mt8173_cpufreq_driver = {
static int mt8173_cpufreq_probe(struct platform_device *pdev)
{
- int ret;
+ struct mtk_cpu_dvfs_info *info;
+ struct list_head *list, *tmp;
+ int cpu, ret;
+
+ for_each_possible_cpu(cpu) {
+ info = get_dvfs_info(cpu);
+ if (info)
+ continue;
+
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info) {
+ ret = -ENOMEM;
+ goto release_dvfs_info_list;
+ }
+
+ ret = mtk_cpu_dvfs_info_init(info, cpu);
+ if (ret) {
+ pr_err("%s failed to initialize dvfs info for cpu%d\n",
+ __func__, cpu);
+ kfree(info);
+ goto release_dvfs_info_list;
+ }
+
+ list_add(&info->list_head, &dvfs_info_list);
+ }
ret = cpufreq_register_driver(&mt8173_cpufreq_driver);
if (ret)
pr_err("failed to register mtk cpufreq driver\n");
+ return 0;
+
+release_dvfs_info_list:
+ list_for_each_safe(list, tmp, &dvfs_info_list) {
+ info = list_entry(list, struct mtk_cpu_dvfs_info, list_head);
+
+ mtk_cpu_dvfs_info_release(info);
+ list_del(list);
+ kfree(info);
+ }
+
return ret;
}
--
1.9.1
^ permalink raw reply related [flat|nested] 7+ messages in thread
end of thread, other threads:[~2015-11-30 14:38 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2015-11-30 3:02 [PATCH 4/4] cpufreq: mt8173: move resources allocation into ->probe() Ricky Liang
2015-11-30 5:32 ` Viresh Kumar
2015-11-30 5:32 ` Viresh Kumar
2015-11-30 14:38 ` Pi-Cheng Chen
2015-11-30 14:38 ` Pi-Cheng Chen
-- strict thread matches above, loose matches on Subject: below --
2015-11-29 8:31 [PATCH 1/4] cpufreq: mt8173: add CPUFREQ_HAVE_GOVERNOR_PER_POLICY flag Pi-Cheng Chen
2015-11-29 8:31 ` [PATCH 4/4] cpufreq: mt8173: move resources allocation into ->probe() Pi-Cheng Chen
2015-11-29 8:31 ` Pi-Cheng Chen
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.