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From: Chen Gang S <gang.chen@sunrus.com.cn>
To: airlied@linux.ie, p.zabel@pengutronix.de,
	laurent.pinchart@ideasonboard.com
Cc: robdclark@gmail.com, boris.brezillon@free-electrons.com,
	nicolas.ferre@atmel.com, benjamin.gaignard@linaro.org,
	jg1.han@samsung.com, dri-devel@lists.freedesktop.org,
	linux-sh@vger.kernel.org,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	chris@zankel.net, jcmvbkbc@gmail.com
Subject: Re: [PATCH] drm: Kconfig: Let all DRM_GEM_CMA_HELPER related macros depend on HAVE_DMA_ATTRS
Date: Sun, 22 Feb 2015 09:13:56 +0000	[thread overview]
Message-ID: <54E99DD4.6010602@sunrus.com.cn> (raw)
In-Reply-To: <54CFEBA2.9070801@sunrus.com.cn>

On 2/3/15 05:26, Chen Gang S wrote:

[...]
 
> 
>  - Xtensa gcc5 cross compiler has issues:
> 
>    it causes more than 10 broken areas with allmodconfig (but no issues
>    with defconfig). I guess, in fact, it is only 1 real issue (which can
>    cause all breaks), and I shall try to fix it within this month.
>

I finish analysing for it, it is really only one issue for gcc5, and I
guess, this issue is also not only for xtensa. I send related fix patch
to gcc patch mailing list, hope it can pass checking.

The cause is "the variables are not initialized before using them", the
bug information is "https://gcc.gnu.org/bugzilla/show_bug.cgi?ide117".

After fix this issue, it can build xtensa Linux kernel with allmodconfig
successfully.

[...]

Thanks.
-- 
Chen Gang

Open, share, and attitude like air, water, and life which God blessed

WARNING: multiple messages have this Message-ID (diff)
From: Chen Gang S <gang.chen@sunrus.com.cn>
To: airlied@linux.ie, p.zabel@pengutronix.de,
	laurent.pinchart@ideasonboard.com
Cc: robdclark@gmail.com, boris.brezillon@free-electrons.com,
	nicolas.ferre@atmel.com, benjamin.gaignard@linaro.org,
	jg1.han@samsung.com, dri-devel@lists.freedesktop.org,
	linux-sh@vger.kernel.org,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	chris@zankel.net, jcmvbkbc@gmail.com
Subject: Re: [PATCH] drm: Kconfig: Let all DRM_GEM_CMA_HELPER related macros depend on HAVE_DMA_ATTRS
Date: Sun, 22 Feb 2015 17:13:56 +0800	[thread overview]
Message-ID: <54E99DD4.6010602@sunrus.com.cn> (raw)
In-Reply-To: <54CFEBA2.9070801@sunrus.com.cn>

On 2/3/15 05:26, Chen Gang S wrote:

[...]
 
> 
>  - Xtensa gcc5 cross compiler has issues:
> 
>    it causes more than 10 broken areas with allmodconfig (but no issues
>    with defconfig). I guess, in fact, it is only 1 real issue (which can
>    cause all breaks), and I shall try to fix it within this month.
>

I finish analysing for it, it is really only one issue for gcc5, and I
guess, this issue is also not only for xtensa. I send related fix patch
to gcc patch mailing list, hope it can pass checking.

The cause is "the variables are not initialized before using them", the
bug information is "https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65117".

After fix this issue, it can build xtensa Linux kernel with allmodconfig
successfully.

[...]

Thanks.
-- 
Chen Gang

Open, share, and attitude like air, water, and life which God blessed

  reply	other threads:[~2015-02-22  9:13 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-01 14:08 [PATCH] drm: Kconfig: Let all DRM_GEM_CMA_HELPER related macros depend on HAVE_DMA_ATTRS Chen Gang S
2015-02-01 14:08 ` Chen Gang S
2015-02-02 21:26 ` Chen Gang S
2015-02-02 21:26   ` Chen Gang S
2015-02-22  9:13   ` Chen Gang S [this message]
2015-02-22  9:13     ` Chen Gang S
2015-02-25  1:51     ` Chen Gang S
2015-02-25  1:51       ` Chen Gang S
2015-02-03 10:45 ` Laurent Pinchart
2015-02-03 10:45   ` Laurent Pinchart
2015-02-03 10:45   ` Laurent Pinchart
2015-02-03 11:46   ` Chen Gang S
2015-02-03 11:46     ` Chen Gang S

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