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From: patrice.chotard@st.com (Patrice Chotard)
To: linux-arm-kernel@lists.infradead.org
Subject: [RESEND PATCH 1/2] pinctrl: st: avoid multiple mutex lock
Date: Wed, 7 Jan 2015 11:30:49 +0100	[thread overview]
Message-ID: <54AD0AD9.3010308@st.com> (raw)
In-Reply-To: <CACRpkdbOftsepHFBv32j-ty2+N3vDJPP27iMEWwZKO3ciRv0ug@mail.gmail.com>

Hi Linus
On 01/07/2015 10:44 AM, Linus Walleij wrote:
> On Mon, Jan 5, 2015 at 11:04 AM, Patrice CHOTARD <patrice.chotard@st.com> wrote:
>
>> From: Francesco VIRLINZI <francesco.virlinzi@st.com>
>>
>> Using the sysfs inteface to inspect the pins configuration
>> the system can walk around a path which acquires the same
>> mutex twice.
>>
>> On STiH407 platform, for example :
>> cat /sys/kernel/debug/pinctrl/920f080.pin-controller-front0/pinconf-pins
>> hangs the kernel and never returns.
>>
>> With this patch the mutex is temporary freed.
>>
>> Signed-off-by: Francesco Virlinzi <francesco.virlinzi@st.com>
>> Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
> Patch applied to fixes. Sorry for the delay.

Don't worry ;-)

Thanks

>
> Yours,
> Linus Walleij

WARNING: multiple messages have this Message-ID (diff)
From: Patrice Chotard <patrice.chotard@st.com>
To: Linus Walleij <linus.walleij@linaro.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>
Subject: Re: [RESEND PATCH 1/2] pinctrl: st: avoid multiple mutex lock
Date: Wed, 7 Jan 2015 11:30:49 +0100	[thread overview]
Message-ID: <54AD0AD9.3010308@st.com> (raw)
In-Reply-To: <CACRpkdbOftsepHFBv32j-ty2+N3vDJPP27iMEWwZKO3ciRv0ug@mail.gmail.com>

Hi Linus
On 01/07/2015 10:44 AM, Linus Walleij wrote:
> On Mon, Jan 5, 2015 at 11:04 AM, Patrice CHOTARD <patrice.chotard@st.com> wrote:
>
>> From: Francesco VIRLINZI <francesco.virlinzi@st.com>
>>
>> Using the sysfs inteface to inspect the pins configuration
>> the system can walk around a path which acquires the same
>> mutex twice.
>>
>> On STiH407 platform, for example :
>> cat /sys/kernel/debug/pinctrl/920f080.pin-controller-front0/pinconf-pins
>> hangs the kernel and never returns.
>>
>> With this patch the mutex is temporary freed.
>>
>> Signed-off-by: Francesco Virlinzi <francesco.virlinzi@st.com>
>> Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
> Patch applied to fixes. Sorry for the delay.

Don't worry ;-)

Thanks

>
> Yours,
> Linus Walleij


  reply	other threads:[~2015-01-07 10:30 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-05 10:04 [RESEND PATCH 0/2] pinctrl-st: various fixes Patrice CHOTARD
2015-01-05 10:04 ` Patrice CHOTARD
2015-01-05 10:04 ` [RESEND PATCH 1/2] pinctrl: st: avoid multiple mutex lock Patrice CHOTARD
2015-01-05 10:04   ` Patrice CHOTARD
2015-01-07  9:44   ` Linus Walleij
2015-01-07  9:44     ` Linus Walleij
2015-01-07 10:30     ` Patrice Chotard [this message]
2015-01-07 10:30       ` Patrice Chotard
2015-01-05 10:04 ` [RESEND PATCH 2/2] pinctrl: st: Add irq_disable hook to st_gpio_irqchip Patrice CHOTARD
2015-01-05 10:04   ` Patrice CHOTARD
2015-01-07  9:45   ` Linus Walleij
2015-01-07  9:45     ` Linus Walleij

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