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From: Vasily Khoruzhick <anarsoul@gmail.com>
To: Marek Vasut <marek.vasut@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org,
	Ben Dooks <ben-linux@fluff.org>,
	"Arnaud Patard (Rtp)" <arnaud.patard@rtp-net.org>,
	linux-samsung-soc@vger.kernel.org
Subject: Re: [PATCH 3/3] h1940: implement mmc_power function
Date: Tue, 24 Aug 2010 17:56:06 +0300	[thread overview]
Message-ID: <201008241756.11529.anarsoul@gmail.com> (raw)
In-Reply-To: <201008241641.57621.marek.vasut@gmail.com>

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В сообщении от 24 августа 2010 17:41:57 автор Marek Vasut написал:
> Dne Út 24. srpna 2010 16:21:01 Vasily Khoruzhick napsal(a):
> > В сообщении от 24 августа 2010 17:01:12 автор Marek Vasut написал:
> > > pr_err() and don't probe the device for which you couldn't request
> > > GPIO.
> > 
> > Well, handling those errors in machine init functions doesn't make sense.
> > PDA is not usable without basic hardware.
> 
> You can use PDA without LCD for example (there are such people, trust me).
> So, this comment really isn't too valid. You can also use PDA without MMC
> support, you still have onboard flash, etc. etc.

But error handling here just increases code size, and gpio_request in init 
function should always succeed. It means something's going really wrong 
(kernel bug or misconfiguration) if gpio_request fails. Btw, Ben suggested to 
use WARN_ON in machine init, look through init functions of qt2410, n30, 
rx1950, vr1000, etc.

Regards
Vasily

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WARNING: multiple messages have this Message-ID (diff)
From: anarsoul@gmail.com (Vasily Khoruzhick)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/3] h1940: implement mmc_power function
Date: Tue, 24 Aug 2010 17:56:06 +0300	[thread overview]
Message-ID: <201008241756.11529.anarsoul@gmail.com> (raw)
In-Reply-To: <201008241641.57621.marek.vasut@gmail.com>

? ????????? ?? 24 ??????? 2010 17:41:57 ????? Marek Vasut ???????:
> Dne ?t 24. srpna 2010 16:21:01 Vasily Khoruzhick napsal(a):
> > ? ????????? ?? 24 ??????? 2010 17:01:12 ????? Marek Vasut ???????:
> > > pr_err() and don't probe the device for which you couldn't request
> > > GPIO.
> > 
> > Well, handling those errors in machine init functions doesn't make sense.
> > PDA is not usable without basic hardware.
> 
> You can use PDA without LCD for example (there are such people, trust me).
> So, this comment really isn't too valid. You can also use PDA without MMC
> support, you still have onboard flash, etc. etc.

But error handling here just increases code size, and gpio_request in init 
function should always succeed. It means something's going really wrong 
(kernel bug or misconfiguration) if gpio_request fails. Btw, Ben suggested to 
use WARN_ON in machine init, look through init functions of qt2410, n30, 
rx1950, vr1000, etc.

Regards
Vasily
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  reply	other threads:[~2010-08-24 14:56 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-08-19 15:00 [PATCH 0/3] h1940 series Vasily Khoruzhick
2010-08-19 15:00 ` Vasily Khoruzhick
2010-08-19 15:00 ` [PATCH 1/3] h1940: use gpiolib for latch access Vasily Khoruzhick
2010-08-19 15:00   ` Vasily Khoruzhick
2010-08-24 13:49   ` Marek Vasut
2010-08-24 13:49     ` Marek Vasut
2010-08-24 14:04     ` Vasily Khoruzhick
2010-08-24 14:04       ` Vasily Khoruzhick
2010-08-24 14:40       ` Marek Vasut
2010-08-24 14:40         ` Marek Vasut
2010-08-24 14:50         ` Vasily Khoruzhick
2010-08-24 14:50           ` Vasily Khoruzhick
2010-08-24 15:04           ` Marek Vasut
2010-08-24 15:04             ` Marek Vasut
2010-09-02 10:53   ` Russell King - ARM Linux
2010-09-02 10:53     ` Russell King - ARM Linux
2010-08-19 15:00 ` [PATCH 2/3] h1940: fix h1940-bluetooth compilation Vasily Khoruzhick
2010-08-19 15:00   ` Vasily Khoruzhick
2010-08-24 13:50   ` Marek Vasut
2010-08-24 13:50     ` Marek Vasut
2010-08-24 13:57     ` Vasily Khoruzhick
2010-08-24 13:57       ` Vasily Khoruzhick
2010-08-24 14:00       ` Marek Vasut
2010-08-24 14:00         ` Marek Vasut
2010-08-19 15:00 ` [PATCH 3/3] h1940: implement mmc_power function Vasily Khoruzhick
2010-08-19 15:00   ` Vasily Khoruzhick
2010-08-24 13:52   ` Marek Vasut
2010-08-24 13:52     ` Marek Vasut
2010-08-24 14:00     ` Vasily Khoruzhick
2010-08-24 14:00       ` Vasily Khoruzhick
2010-08-24 14:01       ` Marek Vasut
2010-08-24 14:01         ` Marek Vasut
2010-08-24 14:21         ` Vasily Khoruzhick
2010-08-24 14:21           ` Vasily Khoruzhick
2010-08-24 14:41           ` Marek Vasut
2010-08-24 14:41             ` Marek Vasut
2010-08-24 14:56             ` Vasily Khoruzhick [this message]
2010-08-24 14:56               ` Vasily Khoruzhick
2010-08-24 15:07               ` Marek Vasut
2010-08-24 15:07                 ` Marek Vasut
2010-08-24 15:19                 ` Vasily Khoruzhick
2010-08-24 15:19                   ` Vasily Khoruzhick
2010-08-24 13:24 ` [PATCH 0/3] h1940 series Vasily Khoruzhick
2010-08-24 13:24   ` Vasily Khoruzhick

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