[U-Boot] USB mass storage gadget patch

[victor]

>> I attach the file for your reference. Please kindly advise me. Thanks.

The changes of file_storage.c:

--- file_storage.c	2012-11-02 18:27:41.072702402 +0800
+++ file_storage.orig.c	2012-11-02 19:36:37.992528292 +0800

@@ -746,10 +745,6 @@
 	struct fsg_dev		*fsg = ep->driver_data;
 	struct fsg_buffhd	*bh = req->context;
 
-ga_bh = bh;
-ga_tag = fsg->tag;
-
 	dump_msg(fsg, "bulk-out", req->buf, req->actual);
 	if (req->status || req->actual != bh->bulk_out_intended_length)
 		DBG(fsg, "%s --> %d, %u/%u\n", __func__,

@@ -1185,9 +1174,6 @@
 				return rc;
 		}
 
-bh->inreq->buf = bh->buf;
-
 		/* If we were asked to read past the end of file,
 		 * end with an empty buffer. */
 		if (amount == 0) {
@@ -1575,8 +1560,6 @@
 	static char vendor_id[] = "Linux   ";
 	static char product_cdrom_id[] = "File-CD Gadget  ";
 
-bh->inreq->buf = bh->buf;	
 
 	if (!fsg->curlun) {		// Unsupported LUNs are okay
 		fsg->bad_lun_okay = 1;
@@ -1667,15 +1649,12 @@
 	int		pmi = fsg->cmnd[8];
 	u8		*buf = (u8 *) bh->buf;
 
-bh->inreq->buf = bh->buf;
 	/* Check the PMI and LBA fields */
 	if (pmi > 1 || (pmi == 0 && lba != 0)) {
 		curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
 		return -EINVAL;
 	}
 
@@ -1755,8 +1734,6 @@
 		curlun->sense_data = SS_SAVING_PARAMETERS_NOT_SUPPORTED;
 		return -EINVAL;
 	}
-printf("C %s %x ", __func__, (u8 *)bh->buf);
-bh->inreq->buf = bh->buf;
 
 	changeable_values = (pc == 1);
 	all_pages = (page_code == 0x3f);
@@ -1865,8 +1842,6 @@
 	struct fsg_lun	*curlun = fsg->curlun;
 	u8		*buf = (u8 *) bh->buf;
 
-printf("%s\n",__func__);
-bh->inreq->buf = bh->buf;
 	buf[0] = buf[1] = buf[2] = 0;
 	buf[3] = 8;		// Only the Current/Maximum Capacity
Descriptor
 	buf += 4;
@@ -1956,9 +1931,8 @@
 
 		nsend = min(fsg->usb_amount_left, (u32) mod_data.buflen);
 		memset(bh->buf + nkeep, 0, nsend - nkeep);
-		//bh->inreq->length = nsend;
+		bh->inreq->length = nsend;
 		bh->inreq->zero = 0;
-printf("%s %x %d %d\n", __func__, (u8 *)bh, bh->inreq->length, nsend);
 		start_transfer(fsg, fsg->bulk_in, bh->inreq,
 				&bh->inreq_busy, &bh->state);
 		bh = fsg->next_buffhd_to_fill = bh->next;

@@ -2137,13 +2107,7 @@
 
 	/* Wait for the next buffer to become available */
 	bh = fsg->next_buffhd_to_fill;
-printf("%s %x %d\n", __func__,  (u8 *)bh, bh->state);
 	while (bh->state != BUF_STATE_EMPTY) {
-if (bh->state == BUF_STATE_FULL)
-{
-	bh->state = BUF_STATE_EMPTY;
-	break;
-}
 		rc = sleep_thread(fsg, __LINE__);
 		if (rc)
 			return rc;
@@ -2180,8 +2144,6 @@
 
 		bh->inreq->length = USB_BULK_CS_WRAP_LEN;
 		bh->inreq->zero = 0;
-bh->inreq->buf = bh->buf;
-printf("bbb %s %x %d\n", __func__, (u8 *)bh, bh->state);
 		start_transfer(fsg, fsg->bulk_in, bh->inreq,
 				&bh->inreq_busy, &bh->state);
 

@@ -2362,12 +2320,9 @@
 	for (i = 1; i < cmnd_size; ++i) {
 		if (fsg->cmnd[i] && !(mask & (1 << i))) {
 
			if (curlun)
 				curlun->sense_data =
SS_INVALID_FIELD_IN_CDB;
			//return -EINVAL;

 		}
 	}
			
@@ -2669,8 +2620,6 @@
 
                 ga_bh->inreq->length = USB_BULK_CS_WRAP_LEN;
                 ga_bh->inreq->zero = 0;
-ga_bh->inreq->buf = ga_bh->buf;
-printf("bbb %s %x %d\n", __func__, (u8 *)ga_bh, ga_bh->state);
                 start_transfer(fsg, fsg->bulk_in, ga_bh->inreq,
                                 &(ga_bh->inreq_busy), &(ga_bh->state));
 
@@ -2732,26 +2679,20 @@
 		/* Queue a request to read a Bulk-only CBW */
 		set_bulk_out_req_length(fsg, bh, USB_BULK_CB_WRAP_LEN);
 		bh->outreq->short_not_ok = 1;
-printf("call start_transfer, %x %x\n", (u8 *)bh, (u8 *)(fsg->bulk_out));
-bh->outreq->context = bh;
 		start_transfer(fsg, fsg->bulk_out, bh->outreq,
 				&bh->outreq_busy, &bh->state);
 		
@@ -3468,8 +3406,6 @@
 	ep->driver_data = fsg;		// claim the endpoint
 	fsg->bulk_out = ep;
 
-if (fsg_fs_bulk_out_desc.bEndpointAddress != 0x1)
-	fsg_fs_bulk_out_desc.bEndpointAddress = 0x1;
 
 	if (transport_is_cbi()) {
 		ep = usb_ep_autoconfig(gadget, &fsg_fs_intr_in_desc);


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