usb gadget: link fixes for MIDI gadget

Change how the MIDI gadget driver builds:  don't use separate
compilation, since it works poorly when key parts are library
code (with init sections etc).  Instead be as close as we can
to "gcc --combine ...".

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2 files changed, 16 insertions, 1 deletions

diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index 55f589131e38..c47204fc6733 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -27,7 +27,7 @@ C_UTILS =	composite.o usbstring.o config.o epautoconf.o
 g_zero-objs                     := zero.o
 g_ether-objs                    := ether.o u_ether.o f_subset.o f_ecm.o $(C_UTILS)
 g_serial-objs                   := serial.o
-g_midi-objs                     := gmidi.o usbstring.o config.o epautoconf.o
+g_midi-objs                     := gmidi.o
 gadgetfs-objs                   := inode.o
 g_file_storage-objs             := file_storage.o usbstring.o config.o \
                                         epautoconf.o
diff --git a/drivers/usb/gadget/gmidi.c b/drivers/usb/gadget/gmidi.c
index ea8651e3da1a..6eee760410d6 100644
--- a/drivers/usb/gadget/gmidi.c
+++ b/drivers/usb/gadget/gmidi.c
@@ -35,6 +35,21 @@
 
 #include "gadget_chips.h"
 
+
+/*
+ * Kbuild is not very cooperative with respect to linking separately
+ * compiled library objects into one module.  So for now we won't use
+ * separate compilation ... ensuring init/exit sections work to shrink
+ * the runtime footprint, and giving us at least some parts of what
+ * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
+ */
+#include "usbstring.c"
+#include "config.c"
+#include "epautoconf.c"
+
+/*-------------------------------------------------------------------------*/
+
+
 MODULE_AUTHOR("Ben Williamson");
 MODULE_LICENSE("GPL v2");