Re: adding aliases to mmc ... again

2014-05-23 Thread Michael Olbrich
On Thu, May 22, 2014 at 01:23:27PM -0600, Stephen Warren wrote: On 05/22/2014 12:21 PM, Sascha Hauer wrote: On Thu, May 22, 2014 at 10:16:35AM -0600, Stephen Warren wrote: On 05/22/2014 09:30 AM, Sascha Hauer wrote: Hi all, The wish to have persistent MMC block device names for passing

Re: adding aliases to mmc ... again

2014-05-23 Thread Sascha Hauer
On Thu, May 22, 2014 at 01:23:27PM -0600, Stephen Warren wrote: Does it solve the following, which AFAIK has always been the primary argument against aligning block device IDs with controller IDs: - User inserts SD card into MMC controller ID (or alias) 1. - /dev/mmcblk1 now exists -

Re: adding aliases to mmc ... again

2014-05-23 Thread Stephen Warren
On 05/23/2014 03:23 AM, Sascha Hauer wrote: ... Speaking of which my preferred solution is another one. As a bootloader developer it really annoys me that I don't have the possibility to tell the kernel to boot a particular device. What I really want to do is to pass a devicetree phandle to

Re: adding aliases to mmc ... again

2014-05-23 Thread Stephen Warren
On 05/23/2014 02:29 AM, Michael Olbrich wrote: On Thu, May 22, 2014 at 01:23:27PM -0600, Stephen Warren wrote: On 05/22/2014 12:21 PM, Sascha Hauer wrote: On Thu, May 22, 2014 at 10:16:35AM -0600, Stephen Warren wrote: On 05/22/2014 09:30 AM, Sascha Hauer wrote: Hi all, The wish to have

Re: adding aliases to mmc ... again

2014-05-23 Thread Sascha Hauer
On Fri, May 23, 2014 at 10:01:53AM -0600, Stephen Warren wrote: On 05/23/2014 03:23 AM, Sascha Hauer wrote: ... Speaking of which my preferred solution is another one. As a bootloader developer it really annoys me that I don't have the possibility to tell the kernel to boot a particular

Re: adding aliases to mmc ... again

2014-05-22 Thread Stephen Warren
On 05/22/2014 09:30 AM, Sascha Hauer wrote: Hi all, The wish to have persistent MMC block device names for passing a suitable root=/dev/mmcblkX option came up several times already and has been discussed at least in these threads:

Re: adding aliases to mmc ... again

2014-05-22 Thread Sascha Hauer
On Thu, May 22, 2014 at 10:16:35AM -0600, Stephen Warren wrote: On 05/22/2014 09:30 AM, Sascha Hauer wrote: Hi all, The wish to have persistent MMC block device names for passing a suitable root=/dev/mmcblkX option came up several times already and has been discussed at least in

Re: adding aliases to mmc ... again

2014-05-22 Thread Stephen Warren
On 05/22/2014 12:21 PM, Sascha Hauer wrote: On Thu, May 22, 2014 at 10:16:35AM -0600, Stephen Warren wrote: On 05/22/2014 09:30 AM, Sascha Hauer wrote: Hi all, The wish to have persistent MMC block device names for passing a suitable root=/dev/mmcblkX option came up several times already and

Re: Adding aliases to mmc

2013-09-22 Thread Dirk Behme
Hi Fabio, Am 18.09.2013 02:06, schrieb Fabio Estevam: Hi Dirk, On Tue, Sep 17, 2013 at 3:04 PM, Fabio Estevam feste...@gmail.com wrote: Hi Dirk, I have adapted your patch at: http://lists.infradead.org/pipermail/linux-arm-kernel/2012-July/111022.html and tested it on 3.12-rc1 on a

Re: Adding aliases to mmc

2013-09-22 Thread Fabio Estevam
Hi Dirk, On Sun, Sep 22, 2013 at 3:48 AM, Dirk Behme dirk.be...@gmail.com wrote: Do you like to send this as a proper patch? Following the recent discussion it sounds to me that there is really some need for something like this. Then we could discuss the technical details. Please do so.

Re: Adding aliases to mmc

2013-09-22 Thread Fabio Estevam
Hi Dirk, On Sun, Sep 22, 2013 at 12:24 PM, Fabio Estevam feste...@gmail.com wrote: Hi Dirk, On Sun, Sep 22, 2013 at 3:48 AM, Dirk Behme dirk.be...@gmail.com wrote: Do you like to send this as a proper patch? Following the recent discussion it sounds to me that there is really some need for

Re: Adding aliases to mmc

2013-09-21 Thread Michael Olbrich
Hi, On Sat, Sep 21, 2013 at 09:42:38AM +0200, Sascha Hauer wrote: On Sat, Sep 21, 2013 at 07:23:27AM +0200, Dirk Behme wrote: Am 20.09.2013 19:03, schrieb Stephen Warren: On 09/20/2013 10:37 AM, Dirk Behme wrote: Am 20.09.2013 18:05, schrieb Stephen Warren: On 09/18/2013 11:22 PM, Dirk

Re: Adding aliases to mmc

2013-09-21 Thread Sascha Hauer
On Sat, Sep 21, 2013 at 02:30:51PM +0200, Michael Olbrich wrote: Hi, An embedded system typically doesn't have an initrd. The kernel boots directly into the rootfs on SD/eMMC. To my understanding, the UUID is different for each SD card/eMMC, correct? Yes by default.

RE: Adding aliases to mmc

2013-09-20 Thread Chaiken, Alison
Stephen Warren writes: Patches to make mmc block devices have static names have been proposed in the past and rejected. I think the main reason is that the block device names are (or can be) dynamic, so anything that assumes a particular naming scheme is simply broken. Why may network devices

Re: Adding aliases to mmc

2013-09-20 Thread Stephen Warren
On 09/20/2013 12:30 AM, Chaiken, Alison wrote: Stephen Warren writes: Patches to make mmc block devices have static names have been proposed in the past and rejected. I think the main reason is that the block device names are (or can be) dynamic, so anything that assumes a particular naming

Re: Adding aliases to mmc

2013-09-20 Thread Dirk Behme
Am 20.09.2013 18:05, schrieb Stephen Warren: On 09/18/2013 11:22 PM, Dirk Behme wrote: ... If you have an embedded system were you just care a little about boot time you don't want to do anything like U-Boot's part uuid every time you boot. Or even worse, you just have a minimalistic boot

Re: Adding aliases to mmc

2013-09-20 Thread Stephen Warren
On 09/20/2013 10:37 AM, Dirk Behme wrote: Am 20.09.2013 18:05, schrieb Stephen Warren: On 09/18/2013 11:22 PM, Dirk Behme wrote: ... If you have an embedded system were you just care a little about boot time you don't want to do anything like U-Boot's part uuid every time you boot. Or even

Re: Adding aliases to mmc

2013-09-20 Thread Dirk Behme
Am 20.09.2013 19:03, schrieb Stephen Warren: On 09/20/2013 10:37 AM, Dirk Behme wrote: Am 20.09.2013 18:05, schrieb Stephen Warren: On 09/18/2013 11:22 PM, Dirk Behme wrote: ... If you have an embedded system were you just care a little about boot time you don't want to do anything like

Re: Adding aliases to mmc

2013-09-18 Thread Stephen Warren
On 09/17/2013 12:04 PM, Fabio Estevam wrote: Hi Dirk, I have adapted your patch at: http://lists.infradead.org/pipermail/linux-arm-kernel/2012-July/111022.html and tested it on 3.12-rc1 on a mx6qsabresd board. Do you have plans to submit it? Maybe as a RFC? It solves the mmcblkX

Re: Adding aliases to mmc

2013-09-18 Thread Stephen Warren
On 09/18/2013 11:01 AM, Dirk Behme wrote: Am 18.09.2013 17:17, schrieb Stephen Warren: On 09/17/2013 12:04 PM, Fabio Estevam wrote: Hi Dirk, I have adapted your patch at: http://lists.infradead.org/pipermail/linux-arm-kernel/2012-July/111022.html and tested it on 3.12-rc1 on a mx6qsabresd

Re: Adding aliases to mmc

2013-09-18 Thread Dirk Behme
Am 18.09.2013 17:17, schrieb Stephen Warren: On 09/17/2013 12:04 PM, Fabio Estevam wrote: Hi Dirk, I have adapted your patch at: http://lists.infradead.org/pipermail/linux-arm-kernel/2012-July/111022.html and tested it on 3.12-rc1 on a mx6qsabresd board. Do you have plans to submit it? Maybe

Re: Adding aliases to mmc

2013-09-18 Thread Dirk Behme
Am 18.09.2013 19:13, schrieb Stephen Warren: On 09/18/2013 11:01 AM, Dirk Behme wrote: Am 18.09.2013 17:17, schrieb Stephen Warren: On 09/17/2013 12:04 PM, Fabio Estevam wrote: Hi Dirk, I have adapted your patch at: http://lists.infradead.org/pipermail/linux-arm-kernel/2012-July/111022.html

Adding aliases to mmc

2013-09-17 Thread Fabio Estevam
Hi Dirk, I have adapted your patch at: http://lists.infradead.org/pipermail/linux-arm-kernel/2012-July/111022.html and tested it on 3.12-rc1 on a mx6qsabresd board. Do you have plans to submit it? Maybe as a RFC? It solves the mmcblkX order issue on my tests and it would be nice we could have

Re: Adding aliases to mmc

2013-09-17 Thread Fabio Estevam
Hi Dirk, On Tue, Sep 17, 2013 at 3:04 PM, Fabio Estevam feste...@gmail.com wrote: Hi Dirk, I have adapted your patch at: http://lists.infradead.org/pipermail/linux-arm-kernel/2012-July/111022.html and tested it on 3.12-rc1 on a mx6qsabresd board. Do you have plans to submit it? Maybe as a

Re: Adding aliases to mmc

2013-09-17 Thread Dirk Behme
Hi Fabio, Am 17.09.2013 20:04, schrieb Fabio Estevam: Hi Dirk, I have adapted your patch at: http://lists.infradead.org/pipermail/linux-arm-kernel/2012-July/111022.html and tested it on 3.12-rc1 on a mx6qsabresd board. Do you have plans to submit it? Maybe as a RFC? It solves the mmcblkX