From: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
To: Mark Brown
<broonie-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
Cc: "spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org"
<spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>,
Laxman Dewangan
<ldewangan-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
"linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: [PATCH] spi: tegra: sequence compatible strings as per preference
Date: Fri, 09 Nov 2012 10:28:38 -0700 [thread overview]
Message-ID: <509D3D46.7060102@wwwdotorg.org> (raw)
In-Reply-To: <20121109171008.GX23807-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
On 11/09/2012 10:10 AM, Mark Brown wrote:
> On Fri, Nov 09, 2012 at 10:04:56AM -0700, Stephen Warren wrote:
>
>> However just FYI, it should not be necessary for correctness; The
>> DT matching order is supposed to be driven purely by the order of
>> the compatible values in the DT now, and not affected by the
>> order of values in the table. (This wasn't always the case, but
>> was a bug that was fixed IIRC by Thierry Reding).
>
> I guess the driver is being used backported in older kernels which
> don't have that fix?
That sounds likely. Laxman, it'd be a good idea to track down the fix
to the DT matching code and backport it, so that hard-to debug issues
aren't caused by the lack of that patch!
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WARNING: multiple messages have this Message-ID (diff)
From: Stephen Warren <swarren@wwwdotorg.org>
To: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Laxman Dewangan <ldewangan@nvidia.com>,
"grant.likely@secretlab.ca" <grant.likely@secretlab.ca>,
Stephen Warren <swarren@nvidia.com>,
"spi-devel-general@lists.sourceforge.net"
<spi-devel-general@lists.sourceforge.net>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] spi: tegra: sequence compatible strings as per preference
Date: Fri, 09 Nov 2012 10:28:38 -0700 [thread overview]
Message-ID: <509D3D46.7060102@wwwdotorg.org> (raw)
In-Reply-To: <20121109171008.GX23807@opensource.wolfsonmicro.com>
On 11/09/2012 10:10 AM, Mark Brown wrote:
> On Fri, Nov 09, 2012 at 10:04:56AM -0700, Stephen Warren wrote:
>
>> However just FYI, it should not be necessary for correctness; The
>> DT matching order is supposed to be driven purely by the order of
>> the compatible values in the DT now, and not affected by the
>> order of values in the table. (This wasn't always the case, but
>> was a bug that was fixed IIRC by Thierry Reding).
>
> I guess the driver is being used backported in older kernels which
> don't have that fix?
That sounds likely. Laxman, it'd be a good idea to track down the fix
to the DT matching code and backport it, so that hard-to debug issues
aren't caused by the lack of that patch!
next prev parent reply other threads:[~2012-11-09 17:28 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-09 9:07 [PATCH] spi: tegra: sequence compatible strings as per preference Laxman Dewangan
2012-11-09 9:07 ` Laxman Dewangan
2012-11-09 16:43 ` Mark Brown
2012-11-09 17:04 ` Stephen Warren
2012-11-09 17:10 ` Mark Brown
[not found] ` <20121109171008.GX23807-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
2012-11-09 17:28 ` Stephen Warren [this message]
2012-11-09 17:28 ` Stephen Warren
2012-11-10 17:07 ` Thierry Reding
[not found] ` <20121110170741.GA17689-RM9K5IK7kjIQXX3q8xo1gnVAuStQJXxyR5q1nwbD4aMs9pC9oP6+/A@public.gmane.org>
2012-12-19 17:00 ` Grant Likely
2012-12-19 17:00 ` Grant Likely
2013-01-08 7:12 ` Thierry Reding
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