From: Greg KH <gregkh@linuxfoundation.org>
To: Liu Ying <Ying.Liu@freescale.com>
Cc: linux-fbdev@vger.kernel.org,
Peter Chen <peter.chen@freescale.com>,
Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>,
Tomi Valkeinen <tomi.valkeinen@ti.com>,
Fabio Estevam <fabio.estevam@freescale.com>,
linux-kernel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH] video: mxsfb: Make sure axi clock is enabled when accessing registers
Date: Wed, 04 Mar 2015 06:08:17 +0000 [thread overview]
Message-ID: <20150304060817.GA12241@kroah.com> (raw)
In-Reply-To: <1425448735-21490-1-git-send-email-Ying.Liu@freescale.com>
On Wed, Mar 04, 2015 at 01:58:55PM +0800, Liu Ying wrote:
> The LCDIF engines embedded in i.MX6sl and i.MX6sx SoCs need the axi clock
> as the engine's system clock. The clock should be enabled when accessing
> LCDIF registers, otherwise the kernel would hang up. We should also keep
> the clock being enabled when the engine is being active to scan out frames
> from memory. This patch makes sure the axi clock is enabled when accessing
> registers so that the kernel hang up issue can be fixed.
>
> Reported-by: Peter Chen <peter.chen@freescale.com>
> Signed-off-by: Liu Ying <Ying.Liu@freescale.com>
> ---
> drivers/video/fbdev/mxsfb.c | 70 ++++++++++++++++++++++++++++++++++++---------
> 1 file changed, 56 insertions(+), 14 deletions(-)
<formletter>
This is not the correct way to submit patches for inclusion in the
stable kernel tree. Please read Documentation/stable_kernel_rules.txt
for how to do this properly.
</formletter>
WARNING: multiple messages have this Message-ID (diff)
From: Greg KH <gregkh@linuxfoundation.org>
To: Liu Ying <Ying.Liu@freescale.com>
Cc: linux-fbdev@vger.kernel.org,
Peter Chen <peter.chen@freescale.com>,
Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>,
Tomi Valkeinen <tomi.valkeinen@ti.com>,
Fabio Estevam <fabio.estevam@freescale.com>,
linux-kernel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH] video: mxsfb: Make sure axi clock is enabled when accessing registers
Date: Tue, 3 Mar 2015 22:08:17 -0800 [thread overview]
Message-ID: <20150304060817.GA12241@kroah.com> (raw)
In-Reply-To: <1425448735-21490-1-git-send-email-Ying.Liu@freescale.com>
On Wed, Mar 04, 2015 at 01:58:55PM +0800, Liu Ying wrote:
> The LCDIF engines embedded in i.MX6sl and i.MX6sx SoCs need the axi clock
> as the engine's system clock. The clock should be enabled when accessing
> LCDIF registers, otherwise the kernel would hang up. We should also keep
> the clock being enabled when the engine is being active to scan out frames
> from memory. This patch makes sure the axi clock is enabled when accessing
> registers so that the kernel hang up issue can be fixed.
>
> Reported-by: Peter Chen <peter.chen@freescale.com>
> Signed-off-by: Liu Ying <Ying.Liu@freescale.com>
> ---
> drivers/video/fbdev/mxsfb.c | 70 ++++++++++++++++++++++++++++++++++++---------
> 1 file changed, 56 insertions(+), 14 deletions(-)
<formletter>
This is not the correct way to submit patches for inclusion in the
stable kernel tree. Please read Documentation/stable_kernel_rules.txt
for how to do this properly.
</formletter>
next prev parent reply other threads:[~2015-03-04 6:08 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-04 5:58 [PATCH] video: mxsfb: Make sure axi clock is enabled when accessing registers Liu Ying
2015-03-04 5:58 ` Liu Ying
2015-03-04 6:08 ` Greg KH [this message]
2015-03-04 6:08 ` Greg KH
2015-03-04 6:57 ` Peter Chen
2015-03-04 6:57 ` Peter Chen
2015-03-04 6:36 ` Peter Chen
2015-03-04 6:36 ` Peter Chen
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