Messages in this thread | | | Date | Tue, 20 Sep 2011 08:51:04 +0900 | Subject | Re: [PATCH] mmc : export hw reset function info to user | From | NamJae Jeon <> |
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2011/9/20 Andrei Warkentin <awarkentin@vmware.com>: > Hi Namjae, others, > > ----- Original Message ----- >> From: "Namjae Jeon" <linkinjeon@gmail.com> >> To: cjb@laptop.org, linux-mmc@vger.kernel.org >> Cc: linux-kernel@vger.kernel.org, "Namjae Jeon" <linkinjeon@gmail.com> >> Sent: Sunday, September 18, 2011 11:20:25 AM >> Subject: [PATCH] mmc : export hw reset function info to user >> >> user app should know whether hw reset function is enable to use it. >> so I try to add sysfs file of hw reset function like enhanced area. >> > > If we're going to be adding a bunch of attributes from ext_csd, why not > just allow dumping the entire ext_csd in a semi-readable form? Via something like > hex_dump_to_buffer. This will allow easy human an machine parsing, and be more > lightweight then adding a sysfs attr for each EXT_CSD byte (of which there are a lot). > > I'm basing this on the thought that the only clients of these attrbutes would > either be developers or engineers involved with MMC media, or very specialized > software. > > Thoughts? > > A >
Hi. Andrei.
We can see all dump of ext_csd by using debugfs like this.
mount -t debugfs /dev/mmcblk0 /mnt/ cat /mnt/mmc0/mmc0\:0001/ext_csd
If user take care of it by showing all dump of ext_csd, we may be comfortable more without having to worry. But most of them that they do not know a lot of information. If we provide some information they need them user friendly, I think that user can use more easily mmc.
Thanks.
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