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Message-id: <5406790B.1090305@samsung.com>
Date:	Wed, 03 Sep 2014 11:12:27 +0900
From:	Jaehoon Chung <jh80.chung@...sung.com>
To:	"Fu, Zhonghui" <zhonghui.fu@...ux.intel.com>,
	Ulf Hansson <ulf.hansson@...aro.org>
Cc:	Chris Ball <chris@...ntf.net>,
	"tgih.jun@...sung.com" <tgih.jun@...sung.com>,
	Aaron Lu <aaron.lu@...el.com>,
	linux-mmc <linux-mmc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Jackey Shen <jackey.shen@....com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH] mmc: core: sdio: Fix unconditional wake_up_process() on
 sdio thread

Hi,

On 09/03/2014 11:10 AM, Fu, Zhonghui wrote:
> 
> Hi,Uffe
> 
> Could you please tell me into which git repository this patch is merged now?

I knew it was merged into Ulf's git repository.
You can refer to below git.

url = http://git.linaro.org/git/people/ulf.hansson/mmc.git


Best Regards,
Jaehoon Chung
> 
> 
> 
> Thanks,
> Zhonghui 
> 
> 
> 
> On 2014/8/26 0:10, Fu, Zhonghui wrote:
>>
>> Many thanks for your helps.
>>
>>
>>
>> Thanks,
>> Zhonghui
>>
>>
>> On 2014/8/18 20:07, Ulf Hansson wrote:
>>> On 18 August 2014 05:04, Fu, Zhonghui <zhonghui.fu@...ux.intel.com> wrote:
>>>> From 21266249bbbaf9407c1e88cd5950e06ac88aeebf Mon Sep 17 00:00:00 2001
>>>> From: Fu Zhonghui <zhonghui.fu@...ux.intel.com>
>>>> Date: Mon, 18 Aug 2014 10:48:14 +0800
>>>> Subject: [PATCH] mmc: core: sdio: Fix unconditional wake_up_process() on sdio thread
>>>>
>>>> 781e989cf59 ("mmc: sdhci: convert to new SDIO IRQ handling") and
>>>> bf3b5ec66bd ("mmc: sdio_irq: rework sdio irq handling") disabled
>>>> the use of our own custom threaded IRQ handler, but left in an
>>>> unconditional wake_up_process() on that handler at resume-time.
>>>> Link: https://bugzilla.kernel.org/show_bug.cgi?id=80151
>>>>
>>>> In addition, the check for MMC_CAP_SDIO_IRQ capability is added
>>>> before enable sdio IRQ.
>>>>
>>>> Signed-off-by: Jaehoon Chung <jh80.chung@...sung.com>
>>>> Signed-off-by: Chris Ball <chris@...ntf.net>
>>>> Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
>>>> Signed-off-by: Fu Zhonghui <zhonghui.fu@...ux.intel.com>
>>> Thanks! Applied for next and added a stable tag for v3.16+.
>>>
>>> Kind regards
>>> Uffe
>>>
>>>> ---
>>>>  drivers/mmc/core/sdio.c     |   12 ++++++++++--
>>>>  drivers/mmc/core/sdio_irq.c |    4 ++--
>>>>  2 files changed, 12 insertions(+), 4 deletions(-)
>>>>
>>>> diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
>>>> index e636d9e..3fc40a7 100644
>>>> --- a/drivers/mmc/core/sdio.c
>>>> +++ b/drivers/mmc/core/sdio.c
>>>> @@ -992,8 +992,16 @@ static int mmc_sdio_resume(struct mmc_host *host)
>>>>                 }
>>>>         }
>>>>
>>>> -       if (!err && host->sdio_irqs)
>>>> -               wake_up_process(host->sdio_irq_thread);
>>>> +       if (!err && host->sdio_irqs) {
>>>> +               if (!(host->caps2 & MMC_CAP2_SDIO_IRQ_NOTHREAD)) {
>>>> +                       wake_up_process(host->sdio_irq_thread);
>>>> +               } else if (host->caps & MMC_CAP_SDIO_IRQ) {
>>>> +                       mmc_host_clk_hold(host);
>>>> +                       host->ops->enable_sdio_irq(host, 1);
>>>> +                       mmc_host_clk_release(host);
>>>> +               }
>>>> +       }
>>>> +
>>>>         mmc_release_host(host);
>>>>
>>>>         host->pm_flags &= ~MMC_PM_KEEP_POWER;
>>>> diff --git a/drivers/mmc/core/sdio_irq.c b/drivers/mmc/core/sdio_irq.c
>>>> index 5cc13c8..696eca4 100644
>>>> --- a/drivers/mmc/core/sdio_irq.c
>>>> +++ b/drivers/mmc/core/sdio_irq.c
>>>> @@ -208,7 +208,7 @@ static int sdio_card_irq_get(struct mmc_card *card)
>>>>                                 host->sdio_irqs--;
>>>>                                 return err;
>>>>                         }
>>>> -               } else {
>>>> +               } else if (host->caps & MMC_CAP_SDIO_IRQ) {
>>>>                         mmc_host_clk_hold(host);
>>>>                         host->ops->enable_sdio_irq(host, 1);
>>>>                         mmc_host_clk_release(host);
>>>> @@ -229,7 +229,7 @@ static int sdio_card_irq_put(struct mmc_card *card)
>>>>                 if (!(host->caps2 & MMC_CAP2_SDIO_IRQ_NOTHREAD)) {
>>>>                         atomic_set(&host->sdio_irq_thread_abort, 1);
>>>>                         kthread_stop(host->sdio_irq_thread);
>>>> -               } else {
>>>> +               } else if (host->caps & MMC_CAP_SDIO_IRQ) {
>>>>                         mmc_host_clk_hold(host);
>>>>                         host->ops->enable_sdio_irq(host, 0);
>>>>                         mmc_host_clk_release(host);
>>>> -- 1.7.1
>>>>
>>>> On 2014/8/12 18:23, Ulf Hansson wrote:
>>>>> On 11 August 2014 07:49, Fu, Zhonghui <zhonghui.fu@...ux.intel.com> wrote:
>>>>>> From 6cee984e1d76ba0a3320430f8cf4318ab65fcf06 Mon Sep 17 00:00:00 2001
>>>>>> From: Fu Zhonghui <zhonghui.fu@...ux.intel.com>
>>>>>> Date: Tue, 5 Aug 2014 12:44:38 +0800
>>>>>> Subject: [PATCH] mmc: core: sdio: Fix unconditional wake_up_process() on sdio thread
>>>>>>
>>>>>> 781e989cf59 ("mmc: sdhci: convert to new SDIO IRQ handling") and
>>>>>> bf3b5ec66bd ("mmc: sdio_irq: rework sdio irq handling") disabled
>>>>>> the use of our own custom threaded IRQ handler, but left in an
>>>>>> unconditional wake_up_process() on that handler at resume-time.
>>>>>> Link: https://bugzilla.kernel.org/show_bug.cgi?id=80151
>>>>>>
>>>>>> In addition, the check for MMC_CAP_SDIO_IRQ capability is added
>>>>>> before enable sdio IRQ.
>>>>>>
>>>>>> Signed-off-by: Jaehoon Chung <jh80.chung@...sung.com>
>>>>>> Signed-off-by: Chris Ball <chris@...ntf.net>
>>>>>> Signed-off-by: Fu Zhonghui <zhonghui.fu@...ux.intel.com>
>>>>>> ---
>>>>>>  drivers/mmc/core/sdio.c     |   14 ++++++++++++--
>>>>>>  drivers/mmc/core/sdio_irq.c |    4 ++--
>>>>>>  2 files changed, 14 insertions(+), 4 deletions(-)
>>>>>>
>>>>>> diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
>>>>>> index e636d9e..e04a540 100644
>>>>>> --- a/drivers/mmc/core/sdio.c
>>>>>> +++ b/drivers/mmc/core/sdio.c
>>>>>> @@ -992,8 +992,18 @@ static int mmc_sdio_resume(struct mmc_host *host)
>>>>>>                 }
>>>>>>         }
>>>>>>
>>>>>> -       if (!err && host->sdio_irqs)
>>>>>> -               wake_up_process(host->sdio_irq_thread);
>>>>>> +       if (!err && host->sdio_irqs) {
>>>>>> +               if (!(host->caps2 & MMC_CAP2_SDIO_IRQ_NOTHREAD)) {
>>>>>> +                       wake_up_process(host->sdio_irq_thread);
>>>>>> +               } else if (host->caps & MMC_CAP_SDIO_IRQ) {
>>>>>> +                       mmc_release_host(host);
>>>>> Why mmc_release_host() and the corresponding mmc_claim_host() below?
>>>>> Those shouldn't be needed I think.
>>>> You are right. These two functions shouldn't be invoked here. I made a new patch as above.
>>>>
>>>>
>>>> Thanks,
>>>> Zhonghui
>>>>>> +                       mmc_host_clk_hold(host);
>>>>>> +                       host->ops->enable_sdio_irq(host, 1);
>>>>>> +                       mmc_host_clk_release(host);
>>>>>> +                       mmc_claim_host(host);
>>>>>> +               }
>>>>>> +       }
>>>>>> +
>>>>>>         mmc_release_host(host);
>>>>>>
>>>>>>         host->pm_flags &= ~MMC_PM_KEEP_POWER;
>>>>>> diff --git a/drivers/mmc/core/sdio_irq.c b/drivers/mmc/core/sdio_irq.c
>>>>>> index 5cc13c8..696eca4 100644
>>>>>> --- a/drivers/mmc/core/sdio_irq.c
>>>>>> +++ b/drivers/mmc/core/sdio_irq.c
>>>>>> @@ -208,7 +208,7 @@ static int sdio_card_irq_get(struct mmc_card *card)
>>>>>>                                 host->sdio_irqs--;
>>>>>>                                 return err;
>>>>>>                         }
>>>>>> -               } else {
>>>>>> +               } else if (host->caps & MMC_CAP_SDIO_IRQ) {
>>>>>>                         mmc_host_clk_hold(host);
>>>>>>                         host->ops->enable_sdio_irq(host, 1);
>>>>>>                         mmc_host_clk_release(host);
>>>>>> @@ -229,7 +229,7 @@ static int sdio_card_irq_put(struct mmc_card *card)
>>>>>>                 if (!(host->caps2 & MMC_CAP2_SDIO_IRQ_NOTHREAD)) {
>>>>>>                         atomic_set(&host->sdio_irq_thread_abort, 1);
>>>>>>                         kthread_stop(host->sdio_irq_thread);
>>>>>> -               } else {
>>>>>> +               } else if (host->caps & MMC_CAP_SDIO_IRQ) {
>>>>>>                         mmc_host_clk_hold(host);
>>>>>>                         host->ops->enable_sdio_irq(host, 0);
>>>>>>                         mmc_host_clk_release(host);
>>>>>> -- 1.7.1
>>>>>>
>>>>> Thanks for working on this!
>>>>>
>>>>> Kind regards
>>>>> Uffe
>>>>> --
>>>>> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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>>> --
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> 
> 

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