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>
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 @@
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 @@
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 @@
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 @@
}
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);