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usb gadget: link fixes for gadget zero

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Change how the Gadget Zero 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>
This commit is contained in:
David Brownell 2008-08-18 17:41:31 -07:00 committed by Greg Kroah-Hartman
parent 4e9ba518ec
commit 7e75bc0f90
3 changed files with 36 additions and 17 deletions
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2
drivers/usb/gadget/Makefile
View file

@ -24,7 +24,7 @@ obj-$(CONFIG_USB_M66592) += m66592-udc.o
#
C_UTILS = composite.o usbstring.o config.o epautoconf.o
g_zero-objs := zero.o f_sourcesink.o f_loopback.o $(C_UTILS)
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

34
drivers/usb/gadget/f_loopback.c
View file

@ -70,7 +70,7 @@ static struct usb_interface_descriptor loopback_intf = {
/* full speed support: */
static struct usb_endpoint_descriptor fs_source_desc = {
static struct usb_endpoint_descriptor fs_loop_source_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@ -78,7 +78,7 @@ static struct usb_endpoint_descriptor fs_source_desc = {
.bmAttributes = USB_ENDPOINT_XFER_BULK,
};
static struct usb_endpoint_descriptor fs_sink_desc = {
static struct usb_endpoint_descriptor fs_loop_sink_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@ -88,14 +88,14 @@ static struct usb_endpoint_descriptor fs_sink_desc = {
static struct usb_descriptor_header *fs_loopback_descs[] = {
(struct usb_descriptor_header *) &loopback_intf,
(struct usb_descriptor_header *) &fs_sink_desc,
(struct usb_descriptor_header *) &fs_source_desc,
(struct usb_descriptor_header *) &fs_loop_sink_desc,
(struct usb_descriptor_header *) &fs_loop_source_desc,
NULL,
};
/* high speed support: */
static struct usb_endpoint_descriptor hs_source_desc = {
static struct usb_endpoint_descriptor hs_loop_source_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@ -103,7 +103,7 @@ static struct usb_endpoint_descriptor hs_source_desc = {
.wMaxPacketSize = __constant_cpu_to_le16(512),
};
static struct usb_endpoint_descriptor hs_sink_desc = {
static struct usb_endpoint_descriptor hs_loop_sink_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@ -113,8 +113,8 @@ static struct usb_endpoint_descriptor hs_sink_desc = {
static struct usb_descriptor_header *hs_loopback_descs[] = {
(struct usb_descriptor_header *) &loopback_intf,
(struct usb_descriptor_header *) &hs_source_desc,
(struct usb_descriptor_header *) &hs_sink_desc,
(struct usb_descriptor_header *) &hs_loop_source_desc,
(struct usb_descriptor_header *) &hs_loop_sink_desc,
NULL,
};
@ -152,7 +152,7 @@ loopback_bind(struct usb_configuration *c, struct usb_function *f)
/* allocate endpoints */
loop->in_ep = usb_ep_autoconfig(cdev->gadget, &fs_source_desc);
loop->in_ep = usb_ep_autoconfig(cdev->gadget, &fs_loop_source_desc);
if (!loop->in_ep) {
autoconf_fail:
ERROR(cdev, "%s: can't autoconfigure on %s\n",
@ -161,17 +161,17 @@ autoconf_fail:
}
loop->in_ep->driver_data = cdev; /* claim */
loop->out_ep = usb_ep_autoconfig(cdev->gadget, &fs_sink_desc);
loop->out_ep = usb_ep_autoconfig(cdev->gadget, &fs_loop_sink_desc);
if (!loop->out_ep)
goto autoconf_fail;
loop->out_ep->driver_data = cdev; /* claim */
/* support high speed hardware */
if (gadget_is_dualspeed(c->cdev->gadget)) {
hs_source_desc.bEndpointAddress =
fs_source_desc.bEndpointAddress;
hs_sink_desc.bEndpointAddress =
fs_sink_desc.bEndpointAddress;
hs_loop_source_desc.bEndpointAddress =
fs_loop_source_desc.bEndpointAddress;
hs_loop_sink_desc.bEndpointAddress =
fs_loop_sink_desc.bEndpointAddress;
f->hs_descriptors = hs_loopback_descs;
}
@ -255,8 +255,10 @@ enable_loopback(struct usb_composite_dev *cdev, struct f_loopback *loop)
struct usb_request *req;
unsigned i;
src = ep_choose(cdev->gadget, &hs_source_desc, &fs_source_desc);
sink = ep_choose(cdev->gadget, &hs_sink_desc, &fs_sink_desc);
src = ep_choose(cdev->gadget,
&hs_loop_source_desc, &fs_loop_source_desc);
sink = ep_choose(cdev->gadget,
&hs_loop_sink_desc, &fs_loop_sink_desc);
/* one endpoint writes data back IN to the host */
ep = loop->in_ep;

17
drivers/usb/gadget/zero.c
View file

@ -57,6 +57,23 @@
#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 "composite.c"
#include "usbstring.c"
#include "config.c"
#include "epautoconf.c"
#include "f_sourcesink.c"
#include "f_loopback.c"
/*-------------------------------------------------------------------------*/
#define DRIVER_VERSION "Cinco de Mayo 2008"