Re: [PATCH V2 1/6] dmaengine: tegra-apb: Correct runtime-pm usage

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 09/11/15 13:57, Andy Shevchenko wrote:
> On Mon, Nov 9, 2015 at 3:23 PM, Jon Hunter <jonathanh@xxxxxxxxxx> wrote:
>> The tegra-apb DMA driver enables runtime-pm but never calls
>> pm_runtime_get/put and hence the runtime-pm callbacks are never invoked.
>> The driver manages the clocks by directly calling clk_prepare_enable()
>> and clk_unprepare_disable().
>>
>> Fix this by replacing the clk_prepare_enable() and clk_disable_unprepare()
>> with pm_runtime_get_sync() and pm_runtime_put(), respectively. Note that
>> the consequence of this is that if runtime-pm is disabled, then the clocks
>> will remain on the entire time the driver is loaded. However, if
>> runtime-pm is disabled, then power is not most likely not a concern.
> 
> Nitpick
> 
>> @@ -1539,11 +1534,10 @@ static int tegra_dma_runtime_resume(struct device *dev)
>>  static int tegra_dma_pm_suspend(struct device *dev)
>>  {
>>         struct tegra_dma *tdma = dev_get_drvdata(dev);
>> -       int i;
>> -       int ret;
>> +       int i, ret;
> 
>>  static int tegra_dma_pm_resume(struct device *dev)
>>  {
>>         struct tegra_dma *tdma = dev_get_drvdata(dev);
>> -       int i;
>> -       int ret;
>> +       int i, ret;
> 
> Do you really need that?

Rhetorical question? ;-)

I can drop that.

Jon

--
To unsubscribe from this list: send the line "unsubscribe linux-tegra" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [ARM Kernel]     [Linux ARM]     [Linux ARM MSM]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux