Re: [PATCH] CDC_WR

[Pat LaVarre <p.lavarre@ieee.org>]

Calling all MMC gurus ...

> > Slanderous or not, also I hear:
> ...
> 7) Fetching all the device configuration this way lets us see the
> "profile list".  Testing whetrher the profile list contains one or more
> writable profiles, none of which are DVD+RW, might be our best mmc way
> of guessing if open of device should fail via EROFS or no.

Ouch, not so good.

The DVD-ROM drive in my cube reports profiles 0010 000A 0009 0008 0002 =
DVD-ROM, CD-RW, CD-R, CD-ROM, Removable Disk.

I think next I will try saying the current-or-not presence of any
non-standard profile, or of any MMC profile that does not require
feature x0020 Random Writable, implies not-writable, but the
current-or-not presence of feature x0020 Random Wruitable implies
yes-writable.

Pat LaVarre