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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Jaswinder Singh <jaswinder.singh@linaro.org>
Cc: andy.green@linaro.org, Andy Green <andy@warmcat.com>,
	Linux USB list <linux-usb@vger.kernel.org>,
	lkml <linux-kernel@vger.kernel.org>,
	arnd@arndb.de, broonie@opensource.wolfsonmicro.com,
	roger.quadros@nokia.com, greg@kroah.com,
	grant.likely@secretlab.ca,
	Nicolas Pitre <nicolas.pitre@linaro.org>
Subject: Re: RFC: Platform data for onboard USB assets
Date: Wed, 23 Mar 2011 08:08:45 +1100	[thread overview]
Message-ID: <1300828125.2402.300.camel@pasglop> (raw)
In-Reply-To: <AANLkTim=ezye=1fQP_1a2SWbPnbENP9B+k27Z3AkS=zf@mail.gmail.com>

> Q(b) If yes, what 'key' is most suitable for identifying the right
> device
>   to attach the data to ?

We already pointed out that in the case of soldered-in device, the
"path" as in the series of -physical- ports leading to the device is
going to be stable.

For anything else, there's no solution. If the device doesn't have a
unique ID, you are toast, period.

On the other hand, I still think platform_data suck big time. Grant made
some good points about the lack of proper typing for example. I believe
that a device-tree based approach is much better in the long run (and
more flexible) despite Andy odd quasi-religious aversion for it.

Cheers,
Ben.


  parent reply	other threads:[~2011-03-22 21:09 UTC|newest]

Thread overview: 156+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-03-11  9:50 RFC: Platform data for onboard USB assets Andy Green
2011-03-11 12:31 ` Arnd Bergmann
2011-03-11 12:44   ` Andy Green
2011-03-11 14:42     ` Roger Quadros
2011-03-11 15:12       ` Roger Quadros
2011-03-11 15:22       ` Arnd Bergmann
2011-03-11 15:50         ` Roger Quadros
2011-03-11 15:55           ` Arnd Bergmann
2011-03-11 15:29   ` Mark Brown
2011-03-11 15:54     ` Arnd Bergmann
2011-03-11 16:03       ` Mark Brown
2011-03-11 16:14         ` Greg KH
2011-03-11 16:27           ` Mark Brown
2011-03-11 16:35             ` Greg KH
2011-03-11 16:48               ` Mark Brown
2011-03-11 16:56                 ` Greg KH
2011-03-11 17:08                   ` Mark Brown
2011-03-11 17:23                     ` Greg KH
2011-03-11 17:41                       ` Mark Brown
2011-03-17  2:14                       ` Nicolas Pitre
2011-03-17 20:13                         ` Greg KH
2011-03-17 20:18                           ` Mark Brown
2011-03-17 20:26                             ` Greg KH
2011-03-17 21:24                               ` Mark Brown
2011-03-17 21:31                                 ` Greg KH
2011-03-17 21:40                                   ` Mark Brown
2011-03-17 21:47                                     ` Greg KH
2011-03-17 22:33                                       ` Arnd Bergmann
2011-03-17 22:53                                         ` Greg KH
2011-03-17 23:18                                           ` Andy Green
2011-03-17 23:25                                             ` Greg KH
2011-03-18  7:42                                               ` Andy Green
2011-03-18 22:54                                                 ` Benjamin Herrenschmidt
2011-03-18 22:57                                                   ` Andy Green
2011-03-18  4:54                                             ` Grant Likely
2011-03-18  8:19                                               ` Arnd Bergmann
2011-03-17 23:22                                         ` Andy Green
2011-03-18 15:00                                           ` Arnd Bergmann
2011-03-18 15:15                                             ` Mark Brown
2011-03-18 17:52                                             ` Andy Green
2011-03-18 18:20                                               ` David Anders
2011-03-18 18:25                                                 ` Mark Brown
2011-03-18 20:02                                                   ` Andy Green
2011-03-18 21:11                                                     ` Arnd Bergmann
2011-03-18 21:17                                                       ` Andy Green
2011-03-18 20:06                                               ` Arnd Bergmann
2011-03-18 21:33                                                 ` Andy Green
2011-03-18 23:25                                                   ` Mark Brown
2011-03-18 23:33                                                     ` Andy Green
2011-03-18 21:36                                                 ` Grant Likely
2011-03-18 22:47                                                 ` Benjamin Herrenschmidt
2011-03-18 21:28                                               ` Grant Likely
2011-03-18 23:04                                                 ` Andy Green
2011-03-18 22:37                                           ` Benjamin Herrenschmidt
2011-03-18 22:39                                             ` Andy Green
2011-03-17 23:27                                         ` Grant Likely
2011-03-18  7:49                                           ` Andy Green
2011-03-18  8:25                                             ` Arnd Bergmann
2011-03-18  8:38                                               ` Andy Green
2011-03-17 22:11                               ` Arnd Bergmann
2011-03-17 22:20                                 ` Greg KH
2011-03-18  8:42                                 ` Roger Quadros
2011-03-18  9:01                                   ` Arnd Bergmann
2011-03-18  9:55                                     ` Roger Quadros
2011-03-18 10:09                                       ` Andy Green
2011-03-17 21:03                           ` Nicolas Pitre
2011-03-17 21:32                             ` Greg KH
2011-03-11 16:26         ` Andy Green
2011-03-11 16:45           ` Alan Stern
2011-03-11 16:51             ` Andy Green
2011-03-11 17:08               ` Greg KH
2011-03-11 18:09                 ` Andy Green
2011-03-11 19:12                   ` Alan Stern
2011-03-11 20:05                     ` Andy Green
2011-03-11 20:21                       ` Greg KH
2011-03-11 21:07                         ` Andy Green
2011-03-11 21:44                           ` Greg KH
2011-03-11 22:24                             ` Andy Green
2011-03-12 16:00                             ` Alan Stern
2011-03-12 23:02                               ` Andy Green
2011-03-11 19:37                   ` Greg KH
2011-03-11 16:53             ` Mark Brown
2011-03-11 16:08 ` Greg KH
2011-03-11 16:20   ` Andy Green
2011-03-11 16:36     ` Greg KH
2011-03-11 16:41       ` Andy Green
2011-03-11 22:07         ` Benjamin Herrenschmidt
2011-03-11 21:52 ` Benjamin Herrenschmidt
2011-03-11 22:45 ` Grant Likely
2011-03-11 22:47   ` Andy Green
2011-03-11 23:39     ` Grant Likely
2011-03-14 14:54   ` Arnd Bergmann
2011-03-22 15:05 ` Jaswinder Singh
2011-03-22 16:04   ` Andy Green
2011-03-22 18:19     ` Jaswinder Singh
2011-03-22 18:37       ` Andy Green
2011-03-22 18:59         ` Jaswinder Singh
2011-03-22 19:35           ` Andy Green
     [not found] ` <AANLkTim=ezye=1fQP_1a2SWbPnbENP9B+k27Z3AkS=zf@mail.gmail.com>
2011-03-22 15:12   ` Mark Brown
2011-03-22 15:23     ` Jaswinder Singh
2011-03-24 18:56     ` Grant Likely
2011-03-22 21:08   ` Benjamin Herrenschmidt [this message]
2011-03-22 22:37     ` Andy Green
2011-03-23  1:03       ` Benjamin Herrenschmidt
2011-03-23  2:26         ` Nicolas Pitre
2011-03-23  3:23           ` Benjamin Herrenschmidt
2011-03-23  4:21             ` Nicolas Pitre
2011-03-23  4:56               ` Greg KH
2011-03-23  5:44               ` Benjamin Herrenschmidt
2011-03-23  9:38               ` Alan Cox
2011-03-23 10:53                 ` Mark Brown
2011-03-23 15:04                   ` Greg KH
2011-03-23 15:10                     ` Mark Brown
2011-03-23 15:24                     ` Andy Green
2011-03-23 15:45                       ` Arnd Bergmann
2011-03-23 15:38                     ` Nicolas Pitre
2011-03-23  9:31             ` Andy Green
2011-03-23  9:47               ` Alan Cox
2011-03-23 10:06                 ` Andy Green
2011-03-23 10:32                   ` Arnd Bergmann
2011-03-23 10:39                     ` Andy Green
2011-03-23 10:56                       ` Alan Cox
2011-03-23 11:13                         ` Andy Green
2011-03-23 11:34                           ` Alan Cox
2011-03-23 12:02                             ` Andy Green
2011-03-23 15:08                     ` Greg KH
2011-03-23 16:12                       ` Arnd Bergmann
2011-03-23 16:22                         ` Greg KH
2011-03-23 16:34                           ` Andy Green
2011-03-23 16:56                           ` [RFC] usbnet: use eth%d name for known ethernet devices Arnd Bergmann
2011-03-23 17:04                             ` Andy Green
2011-03-23 17:11                               ` Arnd Bergmann
2011-03-24 10:45                                 ` Andy Green
2011-03-23 17:13                             ` Arnd Bergmann
2011-03-23 17:54                               ` David Anders
2011-03-23 18:46                             ` Greg KH
2011-03-23 19:35                               ` Arnd Bergmann
     [not found]                                 ` <AANLkTim7hPfTv3gDYnh+jGxHBg0OvX=r1FKYoHnH7H_o@mail.gmail.com>
2011-03-23 19:57                                   ` Arnd Bergmann
2011-03-23 19:59                                     ` Randy Dunlap
2011-03-23 23:17                                       ` Michal Nazarewicz
2011-03-23 23:19                                         ` Randy Dunlap
2011-03-23 23:38                                         ` Steve Calfee
2011-03-24  0:01                                           ` Ben Hutchings
2011-03-24 13:13                                             ` Arnd Bergmann
2011-03-24 13:15                                               ` Arnd Bergmann
2011-03-24 13:44                                                 ` Andy Green
2011-03-24 13:56                                                 ` Alan Stern
2011-03-24 17:20                                                 ` Alexey Orishko
2011-03-25 11:57                                                   ` Arnd Bergmann
2011-03-25 16:26                                                     ` Alexey Orishko
2011-03-25 16:43                                                       ` Arnd Bergmann
2011-03-24 19:17                   ` RFC: Platform data for onboard USB assets Grant Likely
2011-03-24 20:10                     ` Andy Green
2011-03-23 14:55                 ` Nicolas Pitre
2011-03-23 10:22               ` Benjamin Herrenschmidt
2011-03-23 15:11                 ` Nicolas Pitre

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