From: Fabien DESSENNE <fabien.dessenne@st.com>
To: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Ohad Ben-Cohen <ohad@wizery.com>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre TORGUE <alexandre.torgue@st.com>,
"linux-remoteproc@vger.kernel.org"
<linux-remoteproc@vger.kernel.org>,
"linux-stm32@st-md-mailman.stormreply.com"
<linux-stm32@st-md-mailman.stormreply.com>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Benjamin GAIGNARD <benjamin.gaignard@st.com>,
Fabien DESSENNE <fabien.dessenne@st.com>
Subject: Re: [PATCH] hwspinlock: stm32: implement the relax() ops
Date: Mon, 13 May 2019 09:07:28 +0000 [thread overview]
Message-ID: <b05fff00-2dd7-75d7-e8fe-de004b0f20da@st.com> (raw)
In-Reply-To: <CA+M3ks6r_OWvit3OK0yqDDgfnVyyxPoo5aO2n9tRhhoS4=u4XQ@mail.gmail.com>
Hi
Any further comments?
Fabien
On 08/03/2019 1:42 PM, Benjamin Gaignard wrote:
> Le jeu. 7 mars 2019 à 16:42, Fabien Dessenne <fabien.dessenne@st.com> a écrit :
>> Implement this optional ops, called by hwspinlock core while spinning on
>> a lock, between two successive invocations of trylock().
>>
>> Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
> Reviewed-by: Benjamin Gaignard <benjamin.gaignard@st.com>
>
>> ---
>> drivers/hwspinlock/stm32_hwspinlock.c | 7 +++++++
>> 1 file changed, 7 insertions(+)
>>
>> diff --git a/drivers/hwspinlock/stm32_hwspinlock.c b/drivers/hwspinlock/stm32_hwspinlock.c
>> index 4418392..c8eacf4 100644
>> --- a/drivers/hwspinlock/stm32_hwspinlock.c
>> +++ b/drivers/hwspinlock/stm32_hwspinlock.c
>> @@ -5,6 +5,7 @@
>> */
>>
>> #include <linux/clk.h>
>> +#include <linux/delay.h>
>> #include <linux/hwspinlock.h>
>> #include <linux/io.h>
>> #include <linux/kernel.h>
>> @@ -42,9 +43,15 @@ static void stm32_hwspinlock_unlock(struct hwspinlock *lock)
>> writel(STM32_MUTEX_COREID, lock_addr);
>> }
>>
>> +static void stm32_hwspinlock_relax(struct hwspinlock *lock)
>> +{
>> + ndelay(50);
>> +}
>> +
>> static const struct hwspinlock_ops stm32_hwspinlock_ops = {
>> .trylock = stm32_hwspinlock_trylock,
>> .unlock = stm32_hwspinlock_unlock,
>> + .relax = stm32_hwspinlock_relax,
>> };
>>
>> static int stm32_hwspinlock_probe(struct platform_device *pdev)
>> --
>> 2.7.4
>>
>>
>> _______________________________________________
>> linux-arm-kernel mailing list
>> linux-arm-kernel@lists.infradead.org
>> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>
>
next prev parent reply other threads:[~2019-05-13 9:07 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-07 15:42 [PATCH] hwspinlock: stm32: implement the relax() ops Fabien Dessenne
2019-03-08 12:42 ` Benjamin Gaignard
2019-05-13 9:07 ` Fabien DESSENNE [this message]
2019-06-30 4:05 ` Bjorn Andersson
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