diff options
Diffstat (limited to 'src/libusb-glue.c')
| -rw-r--r-- | src/libusb-glue.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/libusb-glue.c b/src/libusb-glue.c index 722a591..0079b08 100644 --- a/src/libusb-glue.c +++ b/src/libusb-glue.c @@ -1202,6 +1202,10 @@ ptp_usb_senddata (PTPParams* params, PTPContainer* ptp, PTPUSBBulkContainer usbdata; uint64_t bytes_left_to_transfer; PTPDataHandler memhandler; + unsigned long packet_size; + PTP_USB *ptp_usb = (PTP_USB *) params->data; + + packet_size = ptp_usb->inep_maxpacket; LIBMTP_USB_DEBUG("SEND DATA PHASE\n"); @@ -1242,7 +1246,9 @@ ptp_usb_senddata (PTPParams* params, PTPContainer* ptp, bytes_left_to_transfer = size-datawlen; ret = PTP_RC_OK; while(bytes_left_to_transfer > 0) { - ret = ptp_write_func (bytes_left_to_transfer, handler, params->data, &written); + int max_long_transfer = ULONG_MAX + 1 - packet_size; + ret = ptp_write_func (bytes_left_to_transfer > max_long_transfer ? max_long_transfer : bytes_left_to_transfer, + handler, params->data, &written); if (ret != PTP_RC_OK) break; if (written == 0) { |