127 	struct sg_mapping_iter miter;  in usb_stor_access_xfer_buf()  local
135 	sg_miter_start(&miter, sg, nents, dir == FROM_XFER_BUF ?  in usb_stor_access_xfer_buf()
138 	if (!sg_miter_skip(&miter, *offset))  in usb_stor_access_xfer_buf()
141 	while (sg_miter_next(&miter) && cnt < buflen) {  in usb_stor_access_xfer_buf()
142 		unsigned int len = min_t(unsigned int, miter.length,  in usb_stor_access_xfer_buf()
146 			memcpy(buffer + cnt, miter.addr, len);  in usb_stor_access_xfer_buf()
148 			memcpy(miter.addr, buffer + cnt, len);  in usb_stor_access_xfer_buf()
150 		if (*offset + len < miter.piter.sg->length) {  in usb_stor_access_xfer_buf()
152 			*sgptr = miter.piter.sg;  in usb_stor_access_xfer_buf()
155 			*sgptr = sg_next(miter.piter.sg);  in usb_stor_access_xfer_buf()
159 	sg_miter_stop(&miter);  in usb_stor_access_xfer_buf()