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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-11-11 17:31:53 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-11-11 17:31:53 -0800 |
| commit | 7fd94beecaff19b346efbf6b77288ab4b0b42dbd (patch) | |
| tree | 01c1354e59c8c338fd2fe65772c169022aa0ca81 /Documentation/usb | |
| parent | 0f89fc3fd861b8c50fc8c8db5b9a640959744ac7 (diff) | |
| parent | f72e3b78867142a19b77f1de0698ce8b03dc6cbd (diff) | |
Merge tag 'gadget-for-v3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
USB gadget patches from Felipe:
"usb: gadget: patches for v3.8
renesas_usbhs implements ->pullup() method, switches over
to devm_request_irq(), adds support for DMA Engine and
got a few miscelaneous cleanups.
The NCM gadget got an endianness fix and the Ethernet
gadget a frame size fix.
We're finally removing the g_file_storage gadget and
sticking to g_mass_storage and the new tcm_usb_gadget
gadgets since that was a huge duplicaton of effort anyway.
While removing g_file_storage, we also had to fix a bunch
of defconfigs which were still pointing to the old gadget.
There's a big series getting us closer to being able to
introduce our configfs interface. The series converts
functions into loadable modules which will, eventually,
be registered to the configfs interface.
Other than that there's the usual typo fixes and miscelaneous
cleanups all over the place."
Diffstat (limited to 'Documentation/usb')
| -rw-r--r-- | Documentation/usb/mass-storage.txt | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/Documentation/usb/mass-storage.txt b/Documentation/usb/mass-storage.txt index e9b9334627b..59063ad7a60 100644 --- a/Documentation/usb/mass-storage.txt +++ b/Documentation/usb/mass-storage.txt @@ -20,9 +20,9 @@ This document describes how to use the gadget from user space, its relation to mass storage function (or MSF) and different gadgets - using it, and how it differs from File Storage Gadget (or FSG). It - will talk only briefly about how to use MSF within composite - gadgets. + using it, and how it differs from File Storage Gadget (or FSG) + (which is no longer included in Linux). It will talk only briefly + about how to use MSF within composite gadgets. * Module parameters @@ -198,16 +198,15 @@ The Mass Storage Function and thus the Mass Storage Gadget has been based on the File Storage Gadget. The difference between the two is that MSG is a composite gadget (ie. uses the composite framework) - while file storage gadget is a traditional gadget. From userspace + while file storage gadget was a traditional gadget. From userspace point of view this distinction does not really matter, but from kernel hacker's point of view, this means that (i) MSG does not duplicate code needed for handling basic USB protocol commands and (ii) MSF can be used in any other composite gadget. - Because of that, File Storage Gadget has been deprecated and - scheduled to be removed in Linux 3.8. All users need to transition - to the Mass Storage Gadget by that time. The two gadgets behave - mostly the same from the outside except: + Because of that, File Storage Gadget has been removed in Linux 3.8. + All users need to transition to the Mass Storage Gadget. The two + gadgets behave mostly the same from the outside except: 1. In FSG the “removable” and “cdrom” module parameters set the flag for all logical units whereas in MSG they accept a list of y/n |