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authorDavid Brownell <dbrownell@users.sourceforge.net>2008-08-18 17:41:02 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2008-10-16 09:24:45 -0700
commit4e9ba518ec19c6c961bf6074ec05ae1a927230bc (patch)
tree630e9ef1a29262340f14574cc4b7692368d2369f
parent7fb6b5d51daf3613045258ee8add07022d8c39d3 (diff)
usb gadget: link fixes for serial gadget
Change how the serial 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>
-rw-r--r--drivers/usb/gadget/Makefile2
-rw-r--r--drivers/usb/gadget/serial.c18
2 files changed, 19 insertions, 1 deletions
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index fcb5cb9094d..853dd022943 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -26,7 +26,7 @@ C_UTILS = composite.o usbstring.o config.o epautoconf.o
g_zero-objs := zero.o f_sourcesink.o f_loopback.o $(C_UTILS)
g_ether-objs := ether.o u_ether.o f_subset.o f_ecm.o $(C_UTILS)
-g_serial-objs := serial.o u_serial.o f_acm.o f_serial.o $(C_UTILS)
+g_serial-objs := serial.o
g_midi-objs := gmidi.o usbstring.o config.o epautoconf.o
gadgetfs-objs := inode.o
g_file_storage-objs := file_storage.o usbstring.o config.o \
diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c
index b3699afff00..3faa7a7022d 100644
--- a/drivers/usb/gadget/serial.c
+++ b/drivers/usb/gadget/serial.c
@@ -30,6 +30,24 @@
/*-------------------------------------------------------------------------*/
+/*
+ * 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 "composite.c"
+#include "usbstring.c"
+#include "config.c"
+#include "epautoconf.c"
+
+#include "f_acm.c"
+#include "f_serial.c"
+#include "u_serial.c"
+
+/*-------------------------------------------------------------------------*/
+
/* Thanks to NetChip Technologies for donating this product ID.
*
* DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!!