From: Wolfram Sang <wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org>
To: Feng Kan <fkan-qTEPVZfXA3Y@public.gmane.org>
Cc: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>,
"linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org"
<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
patches <patches-qTEPVZfXA3Y@public.gmane.org>,
jassisingbrar-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
"linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Hieu Le <hnle-qTEPVZfXA3Y@public.gmane.org>
Subject: Re: [PATCH 4/6] i2c: busses: add SLIMpro I2C device driver on APM X-Gene platform
Date: Fri, 30 Jan 2015 07:11:18 +0100 [thread overview]
Message-ID: <20150130061118.GA995@katana> (raw)
In-Reply-To: <CAL85gmCuJtS2DMVHc96FtM_nP2++wMXNrrUp0Kvx0qajKsFuCw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
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> > ctx->dev is probably the wrong device here. The i2c controller is not
> > DMA capable itself, you need to have a pointer to the device that actually
> > performs the DMA here.
>
> Arnd, I do agree this may not be the best identification. There is no
> representation for this on the Linux side. I could put it as NULL. However,
> there are other i2c bus drivers that seem to do the same thing. Please
> let me know what you think.
For completeness: Those drivers need fixing!
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WARNING: multiple messages have this Message-ID (diff)
From: wsa@the-dreams.de (Wolfram Sang)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/6] i2c: busses: add SLIMpro I2C device driver on APM X-Gene platform
Date: Fri, 30 Jan 2015 07:11:18 +0100 [thread overview]
Message-ID: <20150130061118.GA995@katana> (raw)
In-Reply-To: <CAL85gmCuJtS2DMVHc96FtM_nP2++wMXNrrUp0Kvx0qajKsFuCw@mail.gmail.com>
> > ctx->dev is probably the wrong device here. The i2c controller is not
> > DMA capable itself, you need to have a pointer to the device that actually
> > performs the DMA here.
>
> Arnd, I do agree this may not be the best identification. There is no
> representation for this on the Linux side. I could put it as NULL. However,
> there are other i2c bus drivers that seem to do the same thing. Please
> let me know what you think.
For completeness: Those drivers need fixing!
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From: Wolfram Sang <wsa@the-dreams.de>
To: Feng Kan <fkan@apm.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>, patches <patches@apm.com>,
jassisingbrar@gmail.com, linux-i2c@vger.kernel.org,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Hieu Le <hnle@apm.com>
Subject: Re: [PATCH 4/6] i2c: busses: add SLIMpro I2C device driver on APM X-Gene platform
Date: Fri, 30 Jan 2015 07:11:18 +0100 [thread overview]
Message-ID: <20150130061118.GA995@katana> (raw)
In-Reply-To: <CAL85gmCuJtS2DMVHc96FtM_nP2++wMXNrrUp0Kvx0qajKsFuCw@mail.gmail.com>
[-- Attachment #1: Type: text/plain, Size: 494 bytes --]
> > ctx->dev is probably the wrong device here. The i2c controller is not
> > DMA capable itself, you need to have a pointer to the device that actually
> > performs the DMA here.
>
> Arnd, I do agree this may not be the best identification. There is no
> representation for this on the Linux side. I could put it as NULL. However,
> there are other i2c bus drivers that seem to do the same thing. Please
> let me know what you think.
For completeness: Those drivers need fixing!
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next prev parent reply other threads:[~2015-01-30 6:11 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-08 0:06 [PATCH 0/6] APM X-Gene platform mailbox and proxy i2c driver Feng Kan
2014-10-08 0:06 ` Feng Kan
2014-10-08 0:06 ` [PATCH 1/6] mailbox: add support for APM X-Gene platform mailbox driver Feng Kan
2014-10-08 0:06 ` Feng Kan
2014-10-08 0:06 ` [PATCH 2/6] Documentation: mailbox: Add APM X-Gene SLIMpro mailbox dts documentation Feng Kan
2014-10-08 0:06 ` Feng Kan
[not found] ` <1412726809-7525-3-git-send-email-fkan-qTEPVZfXA3Y@public.gmane.org>
2014-10-08 9:50 ` Mark Rutland
2014-10-08 9:50 ` Mark Rutland
2014-10-08 9:50 ` Mark Rutland
[not found] ` <1412726809-7525-1-git-send-email-fkan-qTEPVZfXA3Y@public.gmane.org>
2014-10-08 0:06 ` [PATCH 3/6] arm64: dts: mailbox device tree node for APM X-Gene platform Feng Kan
2014-10-08 0:06 ` Feng Kan
2014-10-08 0:06 ` Feng Kan
2014-10-08 0:06 ` [PATCH 4/6] i2c: busses: add SLIMpro I2C device driver on " Feng Kan
2014-10-08 0:06 ` Feng Kan
2014-11-11 20:32 ` Wolfram Sang
2014-11-11 20:32 ` Wolfram Sang
2014-11-17 23:39 ` Feng Kan
2014-11-17 23:39 ` Feng Kan
2015-01-09 18:52 ` Feng Kan
2015-01-09 18:52 ` Feng Kan
[not found] ` <CAL85gmB172hgTCHUQ=sshAAYjOwpNKc=YdovjfTFXfnW7LJTLQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-01-09 20:42 ` Wolfram Sang
2015-01-09 20:42 ` Wolfram Sang
2015-01-09 20:42 ` Wolfram Sang
[not found] ` <1412726809-7525-5-git-send-email-fkan-qTEPVZfXA3Y@public.gmane.org>
2014-11-11 21:51 ` Arnd Bergmann
2014-11-11 21:51 ` Arnd Bergmann
2014-11-11 21:51 ` Arnd Bergmann
2015-01-09 18:56 ` Feng Kan
2015-01-09 18:56 ` Feng Kan
[not found] ` <CAL85gmCOXKiHEO=URrAGBNZpJpen5P5PH1xDoF1-jasj0iDg4Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-01-09 19:42 ` Arnd Bergmann
2015-01-09 19:42 ` Arnd Bergmann
2015-01-09 19:42 ` Arnd Bergmann
2015-01-30 1:07 ` Feng Kan
2015-01-30 1:07 ` Feng Kan
2015-01-30 1:07 ` Feng Kan
[not found] ` <CAL85gmCuJtS2DMVHc96FtM_nP2++wMXNrrUp0Kvx0qajKsFuCw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-01-30 6:11 ` Wolfram Sang [this message]
2015-01-30 6:11 ` Wolfram Sang
2015-01-30 6:11 ` Wolfram Sang
2015-02-02 22:15 ` Feng Kan
2015-02-02 22:15 ` Feng Kan
2015-02-02 22:15 ` Feng Kan
[not found] ` <CAL85gmD+0cJfZoWo8ujmjwy9yaKjNPjJaUm00Vrv5o9kcg-ozA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-02-02 23:16 ` Wolfram Sang
2015-02-02 23:16 ` Wolfram Sang
2015-02-02 23:16 ` Wolfram Sang
2014-10-08 0:06 ` [PATCH 5/6] Documentation: i2c: Add APM X-Gene platform SLIMpro I2C driver documentation Feng Kan
2014-10-08 0:06 ` Feng Kan
[not found] ` <1412726809-7525-6-git-send-email-fkan-qTEPVZfXA3Y@public.gmane.org>
2014-10-08 10:11 ` Mark Rutland
2014-10-08 10:11 ` Mark Rutland
2014-10-08 10:11 ` Mark Rutland
2014-11-11 21:40 ` Arnd Bergmann
2014-11-11 21:40 ` Arnd Bergmann
2014-11-11 21:40 ` Arnd Bergmann
2014-10-08 0:06 ` [PATCH 6/6] arm64: dts: add proxy I2C device driver on APM X-Gene platform Feng Kan
2014-10-08 0:06 ` Feng Kan
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