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usb: gadget: Remove File-backed Storage Gadget (g_file_storage).

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The File-backed Storage Gadget (g_file_storage) gadget has been replaced
with Mass Storage Gadget (g_mass_storage) which uses the composite
framework.  This commit removes g_file_storage (and most references to it).

Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Michal Nazarewicz 2012-11-06 22:52:36 +01:00 committed by Felipe Balbi
parent 77614e0250
commit fa06920a3e
7 changed files with 12 additions and 3696 deletions
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2
Documentation/DocBook/gadget.tmpl
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@ -671,7 +671,7 @@ than a kernel driver.
<para>There's a USB Mass Storage class driver, which provides
a different solution for interoperability with systems such
as MS-Windows and MacOS.
That <emphasis>File-backed Storage</emphasis> driver uses a
That <emphasis>Mass Storage</emphasis> driver uses a
file or block device as backing store for a drive,
like the <filename>loop</filename> driver.
The USB host uses the BBB, CB, or CBI versions of the mass

15
Documentation/usb/mass-storage.txt
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@ -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

29
drivers/usb/gadget/Kconfig
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@ -721,31 +721,6 @@ config USB_FUNCTIONFS_GENERIC
Include a configuration with the Function Filesystem alone with
no Ethernet interface.
config USB_FILE_STORAGE
tristate "File-backed Storage Gadget (DEPRECATED)"
depends on BLOCK
help
The File-backed Storage Gadget acts as a USB Mass Storage
disk drive. As its storage repository it can use a regular
file or a block device (in much the same way as the "loop"
device driver), specified as a module parameter.
Say "y" to link the driver statically, or "m" to build a
dynamically linked module called "g_file_storage".
NOTE: This driver is deprecated. Its replacement is the
Mass Storage Gadget.
config USB_FILE_STORAGE_TEST
bool "File-backed Storage Gadget testing version"
depends on USB_FILE_STORAGE
default n
help
Say "y" to generate the larger testing version of the
File-backed Storage Gadget, useful for probing the
behavior of USB Mass Storage hosts. Not needed for
normal operation.
config USB_MASS_STORAGE
tristate "Mass Storage Gadget"
depends on BLOCK
@ -756,8 +731,8 @@ config USB_MASS_STORAGE
device (in much the same way as the "loop" device driver),
specified as a module parameter or sysfs option.
This driver is an updated replacement for the deprecated
File-backed Storage Gadget (g_file_storage).
This driver is a replacement for now removed File-backed
Storage Gadget (g_file_storage).
Say "y" to link the driver statically, or "m" to build
a dynamically linked module called "g_mass_storage".

2
drivers/usb/gadget/Makefile
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@ -44,7 +44,6 @@ g_ether-y := ether.o
g_serial-y := serial.o
g_midi-y := gmidi.o
gadgetfs-y := inode.o
g_file_storage-y := file_storage.o
g_mass_storage-y := mass_storage.o
g_printer-y := printer.o
g_cdc-y := cdc2.o
@ -62,7 +61,6 @@ obj-$(CONFIG_USB_AUDIO) += g_audio.o
obj-$(CONFIG_USB_ETH) += g_ether.o
obj-$(CONFIG_USB_GADGETFS) += gadgetfs.o
obj-$(CONFIG_USB_FUNCTIONFS) += g_ffs.o
obj-$(CONFIG_USB_FILE_STORAGE) += g_file_storage.o
obj-$(CONFIG_USB_MASS_STORAGE) += g_mass_storage.o
obj-$(CONFIG_USB_G_SERIAL) += g_serial.o
obj-$(CONFIG_USB_G_PRINTER) += g_printer.o

3656
drivers/usb/gadget/file_storage.c
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2
drivers/usb/gadget/net2280.c
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@ -9,7 +9,7 @@
* CODE STATUS HIGHLIGHTS
*
* This driver should work well with most "gadget" drivers, including
* the File Storage, Serial, and Ethernet/RNDIS gadget drivers
* the Mass Storage, Serial, and Ethernet/RNDIS gadget drivers
* as well as Gadget Zero and Gadgetfs.
*
* DMA is enabled by default. Drivers using transfer queues might use

2
drivers/usb/gadget/pxa27x_udc.h
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@ -418,7 +418,7 @@ struct udc_stats {
* @irq: udc irq
* @clk: udc clock
* @usb_gadget: udc gadget structure
* @driver: bound gadget (zero, g_ether, g_file_storage, ...)
* @driver: bound gadget (zero, g_ether, g_mass_storage, ...)
* @dev: device
* @mach: machine info, used to activate specific GPIO
* @transceiver: external transceiver to handle vbus sense and D+ pullup