Hello Sylwester,
Thanks a lot for your feedback.
On 03/27/2015 03:36 PM, Sylwester Nawrocki wrote:
>> * GIC wake-up support
>> @@ -374,6 +376,16 @@ static void exynos5420_pm_prepare(void)
>> {
>> unsigned int tmp;
>>
>> + /*
>> + * Exynos5420 requires the MDMA0 controller clock to be
>> + * ungated on suspend in order to be resumed correctly.
>> + */
>> + clk = clk_get(NULL, "mdma0");
>> + if (IS_ERR(clk))
>> + pr_warn("Failed to get mdma0 clk (%ld)\n", PTR_ERR(clk));
>
> I suppose you want this clk_get() call in exynos_pm_init(), now there
Well I wanted to do it in an exynos5420 specific function to avoid
having an of_machine_is_compatible("samsung,exynos5420") but I can
move there if that is preferred.
> is clk_put() missing and this will cause a memory leak.
>
duh, I wonder how I missed that. Thanks for pointing it out.
>> + else
>> + clk_prepare_enable(clk);
>> +
>> /* Set wake-up mask registers */
>> exynos_pm_set_wakeup_mask();
>>
>> @@ -516,6 +528,9 @@ static void exynos5420_pm_resume(void)
>> {
>> unsigned long tmp;
>>
>> + if (!IS_ERR_OR_NULL(clk))
>
> This should be just IS_ERR().
>
Ok.
>> + clk_disable_unprepare(clk);
>> +
>> /* Restore the CPU0 low power state register */
>> tmp = pmu_raw_readl(EXYNOS5_ARM_CORE0_SYS_PWR_REG);
>> pmu_raw_writel(tmp | S5P_CORE_LOCAL_PWR_EN,
>
> --
> Regards,
> Sylwester
>
Best regards,
Javier
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