diff options
author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-11-11 20:31:53 -0500 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-11-11 20:31:53 -0500 |
commit | 7fd94beecaff19b346efbf6b77288ab4b0b42dbd (patch) | |
tree | 01c1354e59c8c338fd2fe65772c169022aa0ca81 /Documentation | |
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')
-rw-r--r-- | Documentation/DocBook/gadget.tmpl | 2 | ||||
-rw-r--r-- | Documentation/usb/mass-storage.txt | 15 |
2 files changed, 8 insertions, 9 deletions
diff --git a/Documentation/DocBook/gadget.tmpl b/Documentation/DocBook/gadget.tmpl index 6ef2f0073e5a..4017f147ba2f 100644 --- a/Documentation/DocBook/gadget.tmpl +++ b/Documentation/DocBook/gadget.tmpl | |||
@@ -671,7 +671,7 @@ than a kernel driver. | |||
671 | <para>There's a USB Mass Storage class driver, which provides | 671 | <para>There's a USB Mass Storage class driver, which provides |
672 | a different solution for interoperability with systems such | 672 | a different solution for interoperability with systems such |
673 | as MS-Windows and MacOS. | 673 | as MS-Windows and MacOS. |
674 | That <emphasis>File-backed Storage</emphasis> driver uses a | 674 | That <emphasis>Mass Storage</emphasis> driver uses a |
675 | file or block device as backing store for a drive, | 675 | file or block device as backing store for a drive, |
676 | like the <filename>loop</filename> driver. | 676 | like the <filename>loop</filename> driver. |
677 | The USB host uses the BBB, CB, or CBI versions of the mass | 677 | The USB host uses the BBB, CB, or CBI versions of the mass |
diff --git a/Documentation/usb/mass-storage.txt b/Documentation/usb/mass-storage.txt index e9b9334627bf..59063ad7a60d 100644 --- a/Documentation/usb/mass-storage.txt +++ b/Documentation/usb/mass-storage.txt | |||
@@ -20,9 +20,9 @@ | |||
20 | 20 | ||
21 | This document describes how to use the gadget from user space, its | 21 | This document describes how to use the gadget from user space, its |
22 | relation to mass storage function (or MSF) and different gadgets | 22 | relation to mass storage function (or MSF) and different gadgets |
23 | using it, and how it differs from File Storage Gadget (or FSG). It | 23 | using it, and how it differs from File Storage Gadget (or FSG) |
24 | will talk only briefly about how to use MSF within composite | 24 | (which is no longer included in Linux). It will talk only briefly |
25 | gadgets. | 25 | about how to use MSF within composite gadgets. |
26 | 26 | ||
27 | * Module parameters | 27 | * Module parameters |
28 | 28 | ||
@@ -198,16 +198,15 @@ | |||
198 | The Mass Storage Function and thus the Mass Storage Gadget has been | 198 | The Mass Storage Function and thus the Mass Storage Gadget has been |
199 | based on the File Storage Gadget. The difference between the two is | 199 | based on the File Storage Gadget. The difference between the two is |
200 | that MSG is a composite gadget (ie. uses the composite framework) | 200 | that MSG is a composite gadget (ie. uses the composite framework) |
201 | while file storage gadget is a traditional gadget. From userspace | 201 | while file storage gadget was a traditional gadget. From userspace |
202 | point of view this distinction does not really matter, but from | 202 | point of view this distinction does not really matter, but from |
203 | kernel hacker's point of view, this means that (i) MSG does not | 203 | kernel hacker's point of view, this means that (i) MSG does not |
204 | duplicate code needed for handling basic USB protocol commands and | 204 | duplicate code needed for handling basic USB protocol commands and |
205 | (ii) MSF can be used in any other composite gadget. | 205 | (ii) MSF can be used in any other composite gadget. |
206 | 206 | ||
207 | Because of that, File Storage Gadget has been deprecated and | 207 | Because of that, File Storage Gadget has been removed in Linux 3.8. |
208 | scheduled to be removed in Linux 3.8. All users need to transition | 208 | All users need to transition to the Mass Storage Gadget. The two |
209 | to the Mass Storage Gadget by that time. The two gadgets behave | 209 | gadgets behave mostly the same from the outside except: |
210 | mostly the same from the outside except: | ||
211 | 210 | ||
212 | 1. In FSG the “removable” and “cdrom” module parameters set the flag | 211 | 1. In FSG the “removable” and “cdrom” module parameters set the flag |
213 | for all logical units whereas in MSG they accept a list of y/n | 212 | for all logical units whereas in MSG they accept a list of y/n |