- Modified drivers/usb/gadget/android.c , to move usb_configuration structure from init data section to bss. Previously this used to create a fatal crash as this configuration is getting added in to linked list which will be later traversed during endpoint configuration setup phase, at which this will show up as a NULL reference.
diff --git a/drivers/usb/gadget/android.c b/drivers/usb/gadget/android.c
index c431131..f14fedf 100644
--- a/drivers/usb/gadget/android.c
+++ b/drivers/usb/gadget/android.c
@@ -113,7 +113,7 @@ static int __init android_bind_config(struct usb_configuration *c)
return adb_function_add(c);
}
-static struct usb_configuration android_config __initdata = {
+static struct usb_configuration android_config = {
.label = "android",
.bind = android_bind_config,
.bConfigurationValue = 1,
- Change the USB Endpoint setup array in drivers/usb/gadget/pxa27x_udc.c, to make two sets of Bulk Endpoints(IN and out) available to android gadget driver. (I removed rest of the configurations, just because only I didn't need them)
diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c
index 7cbc78a..037e435 100644
--- a/drivers/usb/gadget/pxa27x_udc.c
+++ b/drivers/usb/gadget/pxa27x_udc.c
@@ -2171,36 +2171,19 @@ static struct pxa_udc memory = {
USB_EP_CTRL,
USB_EP_OUT_BULK(1),
USB_EP_IN_BULK(2),
- USB_EP_IN_ISO(3),
- USB_EP_OUT_ISO(4),
- USB_EP_IN_INT(5),
+ USB_EP_OUT_BULK(3),
+ USB_EP_IN_BULK(4),
+
},
.pxa_ep = {
PXA_EP_CTRL,
/* Endpoints for gadget zero */
- PXA_EP_OUT_BULK(1, 1, 3, 0, 0),
- PXA_EP_IN_BULK(2, 2, 3, 0, 0),
+ PXA_EP_OUT_BULK(1, 1, 1, 0, 0),
+ PXA_EP_IN_BULK(2, 2, 1, 0, 0),
/* Endpoints for ether gadget, file storage gadget */
- PXA_EP_OUT_BULK(3, 1, 1, 0, 0),
- PXA_EP_IN_BULK(4, 2, 1, 0, 0),
- PXA_EP_IN_ISO(5, 3, 1, 0, 0),
- PXA_EP_OUT_ISO(6, 4, 1, 0, 0),
- PXA_EP_IN_INT(7, 5, 1, 0, 0),
- /* Endpoints for RNDIS, serial */
- PXA_EP_OUT_BULK(8, 1, 2, 0, 0),
- PXA_EP_IN_BULK(9, 2, 2, 0, 0),
- PXA_EP_IN_INT(10, 5, 2, 0, 0),
- /*
- * All the following endpoints are only for completion. They
- * won't never work, as multiple interfaces are really broken on
- * the pxa.
- */
- PXA_EP_OUT_BULK(11, 1, 2, 1, 0),
- PXA_EP_IN_BULK(12, 2, 2, 1, 0),
- /* Endpoint for CDC Ether */
- PXA_EP_OUT_BULK(13, 1, 1, 1, 1),
- PXA_EP_IN_BULK(14, 2, 1, 1, 1),
+ PXA_EP_OUT_BULK(3, 3, 1, 0, 0),
+ PXA_EP_IN_BULK(4, 4, 1, 0, 0),
}
};
diff --git a/drivers/usb/gadget/pxa27x_udc.h b/drivers/usb/gadget/pxa27x_udc.h
index 1d1b793..7a42932 100644
--- a/drivers/usb/gadget/pxa27x_udc.h
+++ b/drivers/usb/gadget/pxa27x_udc.h
@@ -409,8 +409,8 @@ struct udc_stats {
unsigned long irqs_reconfig;
};
-#define NR_USB_ENDPOINTS (1 + 5) /* ep0 + ep1in-bulk + .. + ep3in-iso */
-#define NR_PXA_ENDPOINTS (1 + 14) /* ep0 + epA + epB + .. + epX */
+#define NR_USB_ENDPOINTS (1 + 4) /* ep0 + ep1in-bulk + .. + ep3in-iso */
+#define NR_PXA_ENDPOINTS (1 + 4) /* ep0 + epA + epB + .. + epX */
- After these two steps, your PXA gadget will be recognized by PC. Now change the INF file in Android Windows USB Driver (available along with SDK), to recognize your device.
- Now I am facing some crashes because of NULL reference in Mass Storage profile of android. For recognizing in Windows, both ADB and Storage profile of Android gadget needs to be active. For development in Linux, you need not have Storage. That can be commented off in android.c
- Make sure that you have "UNIX PTY Support" enabled in kernel, as ADB client and server makes use of those devices for process creation and some other operations.
