81 static int usb_ffs_write(usb_handle* h, const void* data, int len) {  in usb_ffs_write()  argument
82     D("about to write (fd=%d, len=%d)", h->bulk_in.get(), len);  in usb_ffs_write()
85     int orig_len = len;  in usb_ffs_write()
86     while (len > 0) {  in usb_ffs_write()
87         int write_len = std::min(USB_FFS_BULK_SIZE, len);  in usb_ffs_write()
94         len -= n;  in usb_ffs_write()
101 static int usb_ffs_read(usb_handle* h, void* data, int len, bool allow_partial) {  in usb_ffs_read()  argument
102     D("about to read (fd=%d, len=%d)", h->bulk_out.get(), len);  in usb_ffs_read()
105     int orig_len = len;  in usb_ffs_read()
107     while (len > 0) {  in usb_ffs_read()
108         int read_len = std::min(USB_FFS_BULK_SIZE, len);  in usb_ffs_read()
115         len -= n;  in usb_ffs_read()
132 static int usb_ffs_do_aio(usb_handle* h, const void* data, int len, bool read) {  in usb_ffs_do_aio()  argument
135     int num_bufs = len / h->io_size + (len % h->io_size == 0 ? 0 : 1);  in usb_ffs_do_aio()
138     if (posix_madvise(const_cast<void*>(data), len, POSIX_MADV_SEQUENTIAL | POSIX_MADV_WILLNEED) <  in usb_ffs_do_aio()
144         int buf_len = std::min(len, static_cast<int>(h->io_size));  in usb_ffs_do_aio()
147         len -= buf_len;  in usb_ffs_do_aio()
188 static int usb_ffs_aio_read(usb_handle* h, void* data, int len, bool /* allow_partial */) {  in usb_ffs_aio_read()  argument
189     return usb_ffs_do_aio(h, data, len, true);  in usb_ffs_aio_read()
192 static int usb_ffs_aio_write(usb_handle* h, const void* data, int len) {  in usb_ffs_aio_write()  argument
193     return usb_ffs_do_aio(h, data, len, false);  in usb_ffs_aio_write()