usb-storage: make sddr09 a separate module

This patch (as1207) converts usb-storage's sddr09 subdriver into a
separate module.

An unexpected complication arises because of DPCM devices, in which
one LUN uses the sddr09 transport and one uses the standard CB
transport.  Since these devices can be used even when
USB_STORAGE_SDDR09 isn't configured, their entries in unusual_devs.h
require special treatment.  If SDDR09 isn't configured then the
entries remain in unusual_devs.h; if it is then the entries are
present in unusual_sddr09.h instead.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/usb/storage/Kconfig b/drivers/usb/storage/Kconfig
index 5c367566be8d..7be8899f2559 100644
--- a/drivers/usb/storage/Kconfig
+++ b/drivers/usb/storage/Kconfig
@@ -83,13 +83,15 @@ config USB_STORAGE_USBAT
           - Sandisk ImageMate SDDR-05b
 
 config USB_STORAGE_SDDR09
-        bool "SanDisk SDDR-09 (and other SmartMedia, including DPCM) support"
+        tristate "SanDisk SDDR-09 (and other SmartMedia, including DPCM) support"
         depends on USB_STORAGE
         help
           Say Y here to include additional code to support the Sandisk SDDR-09
           SmartMedia reader in the USB Mass Storage driver.
           Also works for the Microtech Zio! CompactFlash/SmartMedia reader.
 
+          If this driver is compiled as a module, it will be named ums-sddr09.
+
 config USB_STORAGE_SDDR55
         bool "SanDisk SDDR-55 SmartMedia support"
         depends on USB_STORAGE