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From: Vitaly Wool <vwool@ru.mvista.com>
To: David Brownell <david-b@pacbell.net>
Cc: linux-kernel@vger.kernel.org, dpervushin@gmail.com,
	akpm@osdl.org, greg@kroah.com, basicmark@yahoo.com,
	komal_shah802003@yahoo.com, stephen@streetfiresound.com,
	spi-devel-general@lists.sourceforge.net, Joachim_Jaeger@digi.com
Subject: Re: [PATCH/RFC] SPI: add DMAUNSAFE analog to David Brownell's core
Date: Wed, 14 Dec 2005 20:23:52 +0300	[thread overview]
Message-ID: <43A05528.3080801@ru.mvista.com> (raw)
In-Reply-To: <200512140855.43976.david-b@pacbell.net>

David Brownell wrote:

>On Tuesday 13 December 2005 2:15 pm, Vitaly Wool wrote:
>
>  
>
>>Take for instance spi_w8r8 function used in lotsa places in the drivers 
>>you and Stephen have posted.
>>This function has a) *implicit memcpy* inherited from 
>>spi_write_then_read b) *implicit priority inversion* inherited from the 
>>same place.
>>    
>>
>
>No, (a) is explicit, along with comments not to use that family of
>calls when such things matter more than the convenience of those
>RPC-ish calls.  And (b) was fixed a small patch, now merged.
>  
>
Hmm. Why not use a) when it's convenient? You're placing an artificial 
requirement then.
Yep, saw patch for b). One more kmalloc introduces which can be avoided 
easily with my patch ;)

Vitaly

  reply	other threads:[~2005-12-14 17:24 UTC|newest]

Thread overview: 63+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-12-12 15:20 [PATCH 2.6-git 0/4] SPI core refresh Vitaly Wool
2005-12-12 15:22 ` [PATCH 2.6-git 1/4] SPI core refresh: SPI core patch Vitaly Wool
2005-12-12 15:49   ` Russell King
2005-12-12 15:24 ` [PATCH 2.6-git 2/4] SPI core refresh: MTD dataflash driver Vitaly Wool
2005-12-12 15:26 ` [PATCH 2.6-git 3/4] SPI core refresh: SPI/PNX controller Vitaly Wool
2005-12-12 15:27 ` [PATCH 2.6-git 4/4] SPI core refresh: dumb EEPROM driver Vitaly Wool
2005-12-12 18:01 ` [PATCH 2.6-git 0/4] SPI core refresh Rui Sousa
2005-12-13 12:09   ` [spi-devel-general] " dmitry pervushin
2005-12-13 15:11     ` Rui Sousa
2005-12-13 17:06       ` dmitry pervushin
2005-12-14  6:57       ` Vitaly Wool
2005-12-14 14:28         ` Rui Sousa
2005-12-13 16:35     ` David Brownell
2005-12-13 18:02       ` Rui Sousa
2005-12-13 14:06 ` [PATCH/RFC] SPI: add async message handing library to David Brownell's core Vitaly Wool
2005-12-13 16:53   ` [PATCH/RFC] SPI: add DMAUNSAFE analog " Vitaly Wool
2005-12-13 19:01     ` David Brownell
2005-12-13 19:15       ` Greg KH
2005-12-14 13:50         ` Vitaly Wool
2005-12-14 17:18           ` Greg KH
2005-12-14 17:53             ` Vitaly Wool
2005-12-14 18:50               ` [PATCH/RFC] SPI: add DMAUNSAFE analog David Brownell
2005-12-14 19:29                 ` Vitaly Wool
2005-12-14 19:02               ` [PATCH/RFC] SPI: add DMAUNSAFE analog to David Brownell's core David Brownell
2005-12-14 19:19                 ` Vitaly Wool
2005-12-14 19:33                   ` [spi-devel-general] Re: [PATCH/RFC] SPI: add DMAUNSAFE analog David Brownell
2005-12-14 19:34                 ` [PATCH/RFC] SPI: add DMAUNSAFE analog to David Brownell's core Vitaly Wool
2005-12-15  6:47                 ` Vitaly Wool
2005-12-15 16:44                   ` Greg KH
2005-12-15 22:23                     ` Vitaly Wool
2005-12-15 23:02                       ` Greg KH
2005-12-16  8:37                         ` Vitaly Wool
2005-12-16 17:34                           ` Greg KH
2005-12-16 18:32                             ` [spi-devel-general] Re: [PATCH/RFC] SPI: add DMAUNSAFE analog David Brownell
2005-12-15 20:06                   ` David Brownell
2005-12-15 22:17                     ` Vitaly Wool
2005-12-15 22:33                       ` Greg KH
2005-12-16  3:34                         ` Andy Isaacson
2005-12-16  5:17                           ` Greg KH
2005-12-14 19:16               ` [PATCH/RFC] SPI: add DMAUNSAFE analog to David Brownell's core Greg KH
2005-12-14 19:30                 ` Vitaly Wool
2005-12-15 10:00               ` [spi-devel-general] " dmitry pervushin
2005-12-14 17:22           ` David Brownell
2005-12-14 17:50             ` Vitaly Wool
2005-12-14 19:17               ` [PATCH/RFC] SPI: add DMAUNSAFE analog David Brownell
2005-12-14 20:11                 ` Vitaly Wool
2005-12-13 21:47       ` [PATCH/RFC] SPI: add DMAUNSAFE analog to David Brownell's core Vitaly Wool
2005-12-13 22:15       ` Vitaly Wool
2005-12-14 16:55         ` David Brownell
2005-12-14 17:23           ` Vitaly Wool [this message]
2005-12-14 18:48   ` [PATCH/RFC] SPI: add async message handing library " Stephen Street
2005-12-14 19:41     ` Vitaly Wool
2005-12-14 21:19       ` Stephen Street
2005-12-14 19:31   ` [PATCH/RFC] SPI: add async message handing library David Brownell
2005-12-15 12:19   ` [PATCH/RFC] SPI: async message handing library update Vitaly Wool
2005-12-18 18:59     ` David Brownell
2005-12-19 15:40       ` [spi-devel-general] " dmitry pervushin
2005-12-20  7:23         ` David Brownell
2005-12-20 18:02       ` Vitaly Wool
2005-12-22 17:28         ` David Brownell
2005-12-22 22:10           ` Vitaly Wool
2005-12-22 23:55             ` David Brownell
2005-12-21 13:17       ` Vitaly Wool

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