diff mbox

[v2,1/6] mmc: omap_hsmmc: use devm_clk_get

Message ID 1399654013-28262-2-git-send-email-balajitk@ti.com (mailing list archive)
State New, archived
Headers show

Commit Message

Balaji T K May 9, 2014, 4:46 p.m. UTC
With devm_clk_get conversion clk_put can be removed in clean up path

Signed-off-by: Balaji T K <balajitk@ti.com>
---
 drivers/mmc/host/omap_hsmmc.c |   15 ++++-----------
 1 files changed, 4 insertions(+), 11 deletions(-)

Comments

Ulf Hansson May 12, 2014, 8:33 a.m. UTC | #1
On 9 May 2014 18:46, Balaji T K <balajitk@ti.com> wrote:
> With devm_clk_get conversion clk_put can be removed in clean up path
>
> Signed-off-by: Balaji T K <balajitk@ti.com>
> ---
>  drivers/mmc/host/omap_hsmmc.c |   15 ++++-----------
>  1 files changed, 4 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
> index b4de63b..b8ae7ee 100644
> --- a/drivers/mmc/host/omap_hsmmc.c
> +++ b/drivers/mmc/host/omap_hsmmc.c
> @@ -1922,7 +1922,7 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
>
>         spin_lock_init(&host->irq_lock);
>
> -       host->fclk = clk_get(&pdev->dev, "fck");
> +       host->fclk = devm_clk_get(&pdev->dev, "fck");
>         if (IS_ERR(host->fclk)) {
>                 ret = PTR_ERR(host->fclk);
>                 host->fclk = NULL;
> @@ -1941,7 +1941,7 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
>
>         omap_hsmmc_context_save(host);
>
> -       host->dbclk = clk_get(&pdev->dev, "mmchsdb_fck");
> +       host->dbclk = devm_clk_get(&pdev->dev, "mmchsdb_fck");
>         /*
>          * MMC can still work without debounce clock.
>          */
> @@ -1949,7 +1949,6 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
>                 host->dbclk = NULL;
>         } else if (clk_prepare_enable(host->dbclk) != 0) {
>                 dev_warn(mmc_dev(host->mmc), "Failed to enable debounce clk\n");
> -               clk_put(host->dbclk);
>                 host->dbclk = NULL;

You should use the IS_ERR macro, no need to reset dbclk to NULL.

>         }
>
> @@ -2105,11 +2104,8 @@ err_irq:
>                 dma_release_channel(host->rx_chan);
>         pm_runtime_put_sync(host->dev);
>         pm_runtime_disable(host->dev);
> -       clk_put(host->fclk);
> -       if (host->dbclk) {
> +       if (host->dbclk)

Use IS_ERR instead.

>                 clk_disable_unprepare(host->dbclk);
> -               clk_put(host->dbclk);
> -       }
>  err1:
>         iounmap(host->base);
>         mmc_free_host(mmc);
> @@ -2144,11 +2140,8 @@ static int omap_hsmmc_remove(struct platform_device *pdev)
>
>         pm_runtime_put_sync(host->dev);
>         pm_runtime_disable(host->dev);
> -       clk_put(host->fclk);
> -       if (host->dbclk) {
> +       if (host->dbclk)

Use IS_ERR instead.

>                 clk_disable_unprepare(host->dbclk);
> -               clk_put(host->dbclk);
> -       }
>
>         omap_hsmmc_gpio_free(host->pdata);
>         iounmap(host->base);
> --
> 1.7.5.4
>

Kind regards
Ulf Hansson
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Balaji T K May 12, 2014, 1:33 p.m. UTC | #2
On Monday 12 May 2014 02:03 PM, Ulf Hansson wrote:
> On 9 May 2014 18:46, Balaji T K <balajitk@ti.com> wrote:
>> With devm_clk_get conversion clk_put can be removed in clean up path
>>
>> Signed-off-by: Balaji T K <balajitk@ti.com>
>> ---
>>   drivers/mmc/host/omap_hsmmc.c |   15 ++++-----------
>>   1 files changed, 4 insertions(+), 11 deletions(-)
>>
>> diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
>> index b4de63b..b8ae7ee 100644
>> --- a/drivers/mmc/host/omap_hsmmc.c
>> +++ b/drivers/mmc/host/omap_hsmmc.c
>> @@ -1922,7 +1922,7 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
>>
>>          spin_lock_init(&host->irq_lock);
>>
>> -       host->fclk = clk_get(&pdev->dev, "fck");
>> +       host->fclk = devm_clk_get(&pdev->dev, "fck");
>>          if (IS_ERR(host->fclk)) {
>>                  ret = PTR_ERR(host->fclk);
>>                  host->fclk = NULL;
>> @@ -1941,7 +1941,7 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
>>
>>          omap_hsmmc_context_save(host);
>>
>> -       host->dbclk = clk_get(&pdev->dev, "mmchsdb_fck");
>> +       host->dbclk = devm_clk_get(&pdev->dev, "mmchsdb_fck");
>>          /*
>>           * MMC can still work without debounce clock.
>>           */
>> @@ -1949,7 +1949,6 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
>>                  host->dbclk = NULL;
>>          } else if (clk_prepare_enable(host->dbclk) != 0) {
>>                  dev_warn(mmc_dev(host->mmc), "Failed to enable debounce clk\n");
>> -               clk_put(host->dbclk);
>>                  host->dbclk = NULL;
>
> You should use the IS_ERR macro, no need to reset dbclk to NULL.
>

Agreed, IS_ERR macro usage deserves patch on its own.
will create separate patch on top of this series.

Thanks and Regards
Balaji T K
>>          }
>>
>> @@ -2105,11 +2104,8 @@ err_irq:
>>                  dma_release_channel(host->rx_chan);
>>          pm_runtime_put_sync(host->dev);
>>          pm_runtime_disable(host->dev);
>> -       clk_put(host->fclk);
>> -       if (host->dbclk) {
>> +       if (host->dbclk)
>
> Use IS_ERR instead.
>
>>                  clk_disable_unprepare(host->dbclk);
>> -               clk_put(host->dbclk);
>> -       }
>>   err1:
>>          iounmap(host->base);
>>          mmc_free_host(mmc);
>> @@ -2144,11 +2140,8 @@ static int omap_hsmmc_remove(struct platform_device *pdev)
>>
>>          pm_runtime_put_sync(host->dev);
>>          pm_runtime_disable(host->dev);
>> -       clk_put(host->fclk);
>> -       if (host->dbclk) {
>> +       if (host->dbclk)
>
> Use IS_ERR instead.
>
>>                  clk_disable_unprepare(host->dbclk);
>> -               clk_put(host->dbclk);
>> -       }
>>
>>          omap_hsmmc_gpio_free(host->pdata);
>>          iounmap(host->base);
>> --
>> 1.7.5.4
>>
>
> Kind regards
> Ulf Hansson
>

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Ulf Hansson May 12, 2014, 1:50 p.m. UTC | #3
On 12 May 2014 15:33, Balaji T K <balajitk@ti.com> wrote:
> On Monday 12 May 2014 02:03 PM, Ulf Hansson wrote:
>>
>> On 9 May 2014 18:46, Balaji T K <balajitk@ti.com> wrote:
>>>
>>> With devm_clk_get conversion clk_put can be removed in clean up path
>>>
>>> Signed-off-by: Balaji T K <balajitk@ti.com>
>>> ---
>>>   drivers/mmc/host/omap_hsmmc.c |   15 ++++-----------
>>>   1 files changed, 4 insertions(+), 11 deletions(-)
>>>
>>> diff --git a/drivers/mmc/host/omap_hsmmc.c
>>> b/drivers/mmc/host/omap_hsmmc.c
>>> index b4de63b..b8ae7ee 100644
>>> --- a/drivers/mmc/host/omap_hsmmc.c
>>> +++ b/drivers/mmc/host/omap_hsmmc.c
>>> @@ -1922,7 +1922,7 @@ static int omap_hsmmc_probe(struct platform_device
>>> *pdev)
>>>
>>>          spin_lock_init(&host->irq_lock);
>>>
>>> -       host->fclk = clk_get(&pdev->dev, "fck");
>>> +       host->fclk = devm_clk_get(&pdev->dev, "fck");
>>>          if (IS_ERR(host->fclk)) {
>>>                  ret = PTR_ERR(host->fclk);
>>>                  host->fclk = NULL;
>>> @@ -1941,7 +1941,7 @@ static int omap_hsmmc_probe(struct platform_device
>>> *pdev)
>>>
>>>          omap_hsmmc_context_save(host);
>>>
>>> -       host->dbclk = clk_get(&pdev->dev, "mmchsdb_fck");
>>> +       host->dbclk = devm_clk_get(&pdev->dev, "mmchsdb_fck");
>>>          /*
>>>           * MMC can still work without debounce clock.
>>>           */
>>> @@ -1949,7 +1949,6 @@ static int omap_hsmmc_probe(struct platform_device
>>> *pdev)
>>>                  host->dbclk = NULL;
>>>          } else if (clk_prepare_enable(host->dbclk) != 0) {
>>>                  dev_warn(mmc_dev(host->mmc), "Failed to enable debounce
>>> clk\n");
>>> -               clk_put(host->dbclk);
>>>                  host->dbclk = NULL;
>>
>>
>> You should use the IS_ERR macro, no need to reset dbclk to NULL.
>>
>
> Agreed, IS_ERR macro usage deserves patch on its own.
> will create separate patch on top of this series.

Or you just update this patch, since it would touch there very same
piece of code. :-)

Kind regards
Ulf Hansson
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Balaji T K May 15, 2014, 1:25 p.m. UTC | #4
On Monday 12 May 2014 07:20 PM, Ulf Hansson wrote:
> On 12 May 2014 15:33, Balaji T K <balajitk@ti.com> wrote:
>> On Monday 12 May 2014 02:03 PM, Ulf Hansson wrote:
>>>
>>> On 9 May 2014 18:46, Balaji T K <balajitk@ti.com> wrote:
>>>>
>>>> With devm_clk_get conversion clk_put can be removed in clean up path
>>>>
>>>> Signed-off-by: Balaji T K <balajitk@ti.com>
>>>> ---
>>>>    drivers/mmc/host/omap_hsmmc.c |   15 ++++-----------
>>>>    1 files changed, 4 insertions(+), 11 deletions(-)
>>>>
>>>> diff --git a/drivers/mmc/host/omap_hsmmc.c
>>>> b/drivers/mmc/host/omap_hsmmc.c
>>>> index b4de63b..b8ae7ee 100644
>>>> --- a/drivers/mmc/host/omap_hsmmc.c
>>>> +++ b/drivers/mmc/host/omap_hsmmc.c
>>>> @@ -1922,7 +1922,7 @@ static int omap_hsmmc_probe(struct platform_device
>>>> *pdev)
>>>>
>>>>           spin_lock_init(&host->irq_lock);
>>>>
>>>> -       host->fclk = clk_get(&pdev->dev, "fck");
>>>> +       host->fclk = devm_clk_get(&pdev->dev, "fck");
>>>>           if (IS_ERR(host->fclk)) {
>>>>                   ret = PTR_ERR(host->fclk);
>>>>                   host->fclk = NULL;
>>>> @@ -1941,7 +1941,7 @@ static int omap_hsmmc_probe(struct platform_device
>>>> *pdev)
>>>>
>>>>           omap_hsmmc_context_save(host);
>>>>
>>>> -       host->dbclk = clk_get(&pdev->dev, "mmchsdb_fck");
>>>> +       host->dbclk = devm_clk_get(&pdev->dev, "mmchsdb_fck");
>>>>           /*
>>>>            * MMC can still work without debounce clock.
>>>>            */
>>>> @@ -1949,7 +1949,6 @@ static int omap_hsmmc_probe(struct platform_device
>>>> *pdev)
>>>>                   host->dbclk = NULL;
>>>>           } else if (clk_prepare_enable(host->dbclk) != 0) {
>>>>                   dev_warn(mmc_dev(host->mmc), "Failed to enable debounce
>>>> clk\n");
>>>> -               clk_put(host->dbclk);
>>>>                   host->dbclk = NULL;
>>>
>>>
>>> You should use the IS_ERR macro, no need to reset dbclk to NULL.
>>>
>>
>> Agreed, IS_ERR macro usage deserves patch on its own.
>> will create separate patch on top of this series.
>
> Or you just update this patch, since it would touch there very same
> piece of code. :-)

plus few more code additionally, since these are two different logical changes,
have sent a separate patch. But feel free to squash them if needed.

Thanks and Regards,
Balaji T K
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diff mbox

Patch

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index b4de63b..b8ae7ee 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -1922,7 +1922,7 @@  static int omap_hsmmc_probe(struct platform_device *pdev)
 
 	spin_lock_init(&host->irq_lock);
 
-	host->fclk = clk_get(&pdev->dev, "fck");
+	host->fclk = devm_clk_get(&pdev->dev, "fck");
 	if (IS_ERR(host->fclk)) {
 		ret = PTR_ERR(host->fclk);
 		host->fclk = NULL;
@@ -1941,7 +1941,7 @@  static int omap_hsmmc_probe(struct platform_device *pdev)
 
 	omap_hsmmc_context_save(host);
 
-	host->dbclk = clk_get(&pdev->dev, "mmchsdb_fck");
+	host->dbclk = devm_clk_get(&pdev->dev, "mmchsdb_fck");
 	/*
 	 * MMC can still work without debounce clock.
 	 */
@@ -1949,7 +1949,6 @@  static int omap_hsmmc_probe(struct platform_device *pdev)
 		host->dbclk = NULL;
 	} else if (clk_prepare_enable(host->dbclk) != 0) {
 		dev_warn(mmc_dev(host->mmc), "Failed to enable debounce clk\n");
-		clk_put(host->dbclk);
 		host->dbclk = NULL;
 	}
 
@@ -2105,11 +2104,8 @@  err_irq:
 		dma_release_channel(host->rx_chan);
 	pm_runtime_put_sync(host->dev);
 	pm_runtime_disable(host->dev);
-	clk_put(host->fclk);
-	if (host->dbclk) {
+	if (host->dbclk)
 		clk_disable_unprepare(host->dbclk);
-		clk_put(host->dbclk);
-	}
 err1:
 	iounmap(host->base);
 	mmc_free_host(mmc);
@@ -2144,11 +2140,8 @@  static int omap_hsmmc_remove(struct platform_device *pdev)
 
 	pm_runtime_put_sync(host->dev);
 	pm_runtime_disable(host->dev);
-	clk_put(host->fclk);
-	if (host->dbclk) {
+	if (host->dbclk)
 		clk_disable_unprepare(host->dbclk);
-		clk_put(host->dbclk);
-	}
 
 	omap_hsmmc_gpio_free(host->pdata);
 	iounmap(host->base);