From: Alexandre Belloni <alexandre.belloni@free-electrons.com>
To: Stephen Boyd <sboyd@codeaurora.org>,
Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>,
Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>,
Michael Turquette <mturquette@baylibre.com>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org
Subject: Re: [PATCH v3 00/13] ARM: at91: PMC driver rework
Date: Tue, 15 Dec 2015 10:22:48 +0100 [thread overview]
Message-ID: <20151215092248.GA8574@piout.net> (raw)
In-Reply-To: <20151210180652.40eb8bc4@bbrezillon>
Stephen,
Do you mind us taking that through the at91 and arm-soc trees?
On 10/12/2015 at 18:06:52 +0100, Boris Brezillon wrote :
> On Fri, 4 Dec 2015 18:03:35 +0100
> Alexandre Belloni <alexandre.belloni@free-electrons.com> wrote:
>
> > Hi,
> >
> > This patch set is a cleanup that properly separate drivers needing to access the
> > PMC (PM and USB) from the clock driver by exposing the PMC as a syscon.
> >
> > This also allows to implement a fix for preempt-rt. Currently, at91 platform are
> > crashing when using preempt-rt because the irq handler are transformed in
> > threaded irq handler but at the time the pmc registers its clocks, it is not
> > possible to creat threads, leading to a NULL pointer dereference in the kernel.
> >
> > The new infrastructure uses polling until it is late enough to register threaded
> > irqs.
> >
> > Note that there is an ugly global spinlock for the peripheral and generated
> > clocks. More infrastructure is needed in syscon to get rid of that one. We will
> > be working on that.
>
> To the whole series,
>
> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
>
--
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
WARNING: multiple messages have this Message-ID (diff)
From: alexandre.belloni@free-electrons.com (Alexandre Belloni)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 00/13] ARM: at91: PMC driver rework
Date: Tue, 15 Dec 2015 10:22:48 +0100 [thread overview]
Message-ID: <20151215092248.GA8574@piout.net> (raw)
In-Reply-To: <20151210180652.40eb8bc4@bbrezillon>
Stephen,
Do you mind us taking that through the at91 and arm-soc trees?
On 10/12/2015 at 18:06:52 +0100, Boris Brezillon wrote :
> On Fri, 4 Dec 2015 18:03:35 +0100
> Alexandre Belloni <alexandre.belloni@free-electrons.com> wrote:
>
> > Hi,
> >
> > This patch set is a cleanup that properly separate drivers needing to access the
> > PMC (PM and USB) from the clock driver by exposing the PMC as a syscon.
> >
> > This also allows to implement a fix for preempt-rt. Currently, at91 platform are
> > crashing when using preempt-rt because the irq handler are transformed in
> > threaded irq handler but at the time the pmc registers its clocks, it is not
> > possible to creat threads, leading to a NULL pointer dereference in the kernel.
> >
> > The new infrastructure uses polling until it is late enough to register threaded
> > irqs.
> >
> > Note that there is an ugly global spinlock for the peripheral and generated
> > clocks. More infrastructure is needed in syscon to get rid of that one. We will
> > be working on that.
>
> To the whole series,
>
> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
>
--
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
next prev parent reply other threads:[~2015-12-15 9:22 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-04 17:03 [PATCH v3 00/13] ARM: at91: PMC driver rework Alexandre Belloni
2015-12-04 17:03 ` Alexandre Belloni
2015-12-04 17:03 ` [PATCH v3 01/13] clk: at91: make use of syscon to share PMC registers in several drivers Alexandre Belloni
2015-12-04 17:03 ` Alexandre Belloni
2015-12-04 17:03 ` [PATCH v3 02/13] clk: at91: make use of syscon/regmap internally Alexandre Belloni
2015-12-04 17:03 ` Alexandre Belloni
2016-01-15 2:10 ` Stephen Boyd
2016-01-15 2:10 ` Stephen Boyd
2015-12-04 17:03 ` [PATCH v3 03/13] clk: at91: clk-main: factorize irq handling Alexandre Belloni
2015-12-04 17:03 ` Alexandre Belloni
2016-01-15 2:08 ` Stephen Boyd
2016-01-15 2:08 ` Stephen Boyd
2015-12-04 17:03 ` [PATCH v3 04/13] clk: at91: make IRQ optional and register them later Alexandre Belloni
2015-12-04 17:03 ` Alexandre Belloni
2016-01-15 2:02 ` Stephen Boyd
2016-01-15 2:02 ` Stephen Boyd
2016-01-15 9:39 ` Boris Brezillon
2016-01-15 9:39 ` Boris Brezillon
2016-01-15 9:39 ` Boris Brezillon
2016-01-16 1:26 ` Stephen Boyd
2016-01-16 1:26 ` Stephen Boyd
2016-01-16 12:45 ` Boris Brezillon
2016-01-16 12:45 ` Boris Brezillon
2016-01-20 22:04 ` Stephen Boyd
2016-01-20 22:04 ` Stephen Boyd
2016-01-22 15:40 ` Sebastian Andrzej Siewior
2016-01-22 15:40 ` Sebastian Andrzej Siewior
2016-01-22 15:40 ` Sebastian Andrzej Siewior
2016-01-25 22:28 ` Alexandre Belloni
2016-01-25 22:28 ` Alexandre Belloni
2015-12-04 17:03 ` [PATCH v3 05/13] clk: at91: only disable available IRQs Alexandre Belloni
2015-12-04 17:03 ` Alexandre Belloni
2016-01-15 2:05 ` Stephen Boyd
2016-01-15 2:05 ` Stephen Boyd
2015-12-04 17:03 ` [PATCH v3 06/13] clk: at91: pmc: merge at91_pmc_init in atmel_pmc_probe Alexandre Belloni
2015-12-04 17:03 ` Alexandre Belloni
2016-01-15 2:04 ` Stephen Boyd
2016-01-15 2:04 ` Stephen Boyd
2015-12-04 17:03 ` [PATCH v3 07/13] clk: at91: pmc: move pmc structures to C file Alexandre Belloni
2015-12-04 17:03 ` Alexandre Belloni
2016-01-15 2:04 ` Stephen Boyd
2016-01-15 2:04 ` Stephen Boyd
2015-12-04 17:03 ` [PATCH v3 08/13] ARM: at91: pm: simply call at91_pm_init Alexandre Belloni
2015-12-04 17:03 ` Alexandre Belloni
2015-12-04 17:03 ` [PATCH v3 09/13] ARM: at91: pm: find and remap the pmc Alexandre Belloni
2015-12-04 17:03 ` Alexandre Belloni
2016-01-15 2:04 ` Stephen Boyd
2016-01-15 2:04 ` Stephen Boyd
2015-12-04 17:03 ` [PATCH v3 10/13] ARM: at91: pm: move idle functions to pm.c Alexandre Belloni
2015-12-04 17:03 ` Alexandre Belloni
2015-12-04 17:03 ` [PATCH v3 11/13] ARM: at91: remove useless includes and function prototypes Alexandre Belloni
2015-12-04 17:03 ` Alexandre Belloni
2015-12-04 17:03 ` [PATCH v3 12/13] usb: gadget: atmel: access the PMC using regmap Alexandre Belloni
2015-12-04 17:03 ` Alexandre Belloni
2015-12-04 17:03 ` [PATCH v3 13/13] clk: at91: pmc: drop at91_pmc_base Alexandre Belloni
2015-12-04 17:03 ` Alexandre Belloni
2016-01-15 2:07 ` Stephen Boyd
2016-01-15 2:07 ` Stephen Boyd
2015-12-10 17:06 ` [PATCH v3 00/13] ARM: at91: PMC driver rework Boris Brezillon
2015-12-10 17:06 ` Boris Brezillon
2015-12-15 9:22 ` Alexandre Belloni [this message]
2015-12-15 9:22 ` Alexandre Belloni
2016-01-15 2:07 ` Stephen Boyd
2016-01-15 2:07 ` Stephen Boyd
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