From: Lukasz Majewski <l.majewski@samsung.com>
Date: Tue, 17 Sep 2013 13:58:21 +0000 (+0200)
Subject: usb:g_dnl:ums: Conditional compilation for mass storage function (f_mass_storage)
X-Git-Tag: submit/tizen/20160318.071304~349
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e209f95786e6b0e090590c0c68cc952d871b26ff;p=profile%2Fcommon%2Fplatform%2Fkernel%2Fu-boot-artik.git

usb:g_dnl:ums: Conditional compilation for mass storage function (f_mass_storage)

The mass storage composite function is now compiled in only when
CONFIG_USB_GADGET_MASS_STORAGE is defined.
Such change provides binary size reduction for boards which use USB
download gadget (like am335x_evm) with DFU, but don't use UMS.

For example at am335x_evm board reduction is more than 2KiB for
text and around 120B for data.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Cc: Marek Vasut <marex@denx.de>
---

diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index 1f920300e..d31e33698 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -31,6 +31,7 @@ COBJS-y += epautoconf.o config.o usbstring.o
 COBJS-$(CONFIG_USB_GADGET_S3C_UDC_OTG) += s3c_udc_otg.o
 COBJS-$(CONFIG_USBDOWNLOAD_GADGET) += g_dnl.o
 COBJS-$(CONFIG_DFU_FUNCTION) += f_dfu.o
+COBJS-$(CONFIG_USB_GADGET_MASS_STORAGE) += f_mass_storage.o
 endif
 ifdef CONFIG_USB_ETHER
 COBJS-y += ether.o epautoconf.o config.o usbstring.o
diff --git a/drivers/usb/gadget/g_dnl.c b/drivers/usb/gadget/g_dnl.c
index 61ee0691e..5acb0b815 100644
--- a/drivers/usb/gadget/g_dnl.c
+++ b/drivers/usb/gadget/g_dnl.c
@@ -27,11 +27,11 @@
 #include <part.h>
 
 #include <g_dnl.h>
+#include <usb_mass_storage.h>
 #include "f_dfu.h"
 
 #include "gadget_chips.h"
 #include "composite.c"
-#include "f_mass_storage.c"
 
 /*
  * One needs to define the following:
diff --git a/include/usb_mass_storage.h b/include/usb_mass_storage.h
index ffc3a13c2..d48241c63 100644
--- a/include/usb_mass_storage.h
+++ b/include/usb_mass_storage.h
@@ -24,6 +24,7 @@
 #define SECTOR_SIZE		0x200
 
 #include <mmc.h>
+#include <linux/usb/composite.h>
 
 struct ums_device {
 	struct mmc *mmc;
@@ -52,4 +53,12 @@ extern struct ums_board_info *board_ums_init(unsigned int,
 extern int usb_gadget_handle_interrupts(void);
 extern int fsg_main_thread(void *);
 
+#ifdef CONFIG_USB_GADGET_MASS_STORAGE
+int fsg_add(struct usb_configuration *c);
+#else
+int fsg_add(struct usb_configuration *c)
+{
+	return 0;
+}
+#endif
 #endif /* __USB_MASS_STORAGE_H__ */