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authorAlan Stern <stern@rowland.harvard.edu>2011-06-15 16:31:37 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2011-06-15 17:54:46 -0700
commit664a51a81f6ba39db30cd7b7de61577ca0b2d20d (patch)
tree56784fb1102c249900525841b84a6c9aa4b74494
parent08e6c611123ab499757e4133df7ddc0875c0dccf (diff)
downloadop-kernel-dev-664a51a81f6ba39db30cd7b7de61577ca0b2d20d.zip
op-kernel-dev-664a51a81f6ba39db30cd7b7de61577ca0b2d20d.tar.gz
USB: deprecate g_file_storage
This patch (as1471) deprecates the File-backed Storage Driver and schedules its replacement for the 3.8 kernel release (about two years from now). Users are advised to switch to the Mass Storage Gadget instead. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--Documentation/feature-removal-schedule.txt7
-rw-r--r--drivers/usb/gadget/Kconfig14
-rw-r--r--drivers/usb/gadget/file_storage.c2
3 files changed, 16 insertions, 7 deletions
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index 1a9446b..21f331d 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -600,3 +600,10 @@ Why: Superseded by the UVCIOC_CTRL_QUERY ioctl.
Who: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
----------------------------
+
+What: g_file_storage driver
+When: 3.8
+Why: This driver has been superseded by g_mass_storage.
+Who: Alan Stern <stern@rowland.harvard.edu>
+
+----------------------------
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 9468adb..22e43ff 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -877,7 +877,7 @@ config USB_FUNCTIONFS_GENERIC
no Ethernet interface.
config USB_FILE_STORAGE
- tristate "File-backed Storage Gadget"
+ tristate "File-backed Storage Gadget (DEPRECATED)"
depends on BLOCK
help
The File-backed Storage Gadget acts as a USB Mass Storage
@@ -888,6 +888,9 @@ config USB_FILE_STORAGE
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
@@ -907,14 +910,11 @@ config USB_MASS_STORAGE
device (in much the same way as the "loop" device driver),
specified as a module parameter or sysfs option.
- This is heavily based on File-backed Storage Gadget and in most
- cases you will want to use FSG instead. This gadget is mostly
- here to test the functionality of the Mass Storage Function
- which may be used with composite framework.
+ This driver is an updated replacement for the deprecated
+ 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". If unsure,
- consider File-backed Storage Gadget.
+ a dynamically linked module called "g_mass_storage".
config USB_G_SERIAL
tristate "Serial Gadget (with CDC ACM and CDC OBEX support)"
diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c
index 0360f56..83bee30 100644
--- a/drivers/usb/gadget/file_storage.c
+++ b/drivers/usb/gadget/file_storage.c
@@ -3486,6 +3486,8 @@ static int __init fsg_bind(struct usb_gadget *gadget)
}
INFO(fsg, DRIVER_DESC ", version: " DRIVER_VERSION "\n");
+ INFO(fsg, "NOTE: This driver is deprecated. "
+ "Consider using g_mass_storage instead.\n");
INFO(fsg, "Number of LUNs=%d\n", fsg->nluns);
pathbuf = kmalloc(PATH_MAX, GFP_KERNEL);
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