diff options
Diffstat (limited to 'hw/usb')
| -rw-r--r-- | hw/usb/dev-smartcard-reader.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/hw/usb/dev-smartcard-reader.c b/hw/usb/dev-smartcard-reader.c index cabb564788..f7451923f4 100644 --- a/hw/usb/dev-smartcard-reader.c +++ b/hw/usb/dev-smartcard-reader.c @@ -1064,7 +1064,8 @@ err: return; } -static void ccid_bulk_in_copy_to_guest(USBCCIDState *s, USBPacket *p) +static void ccid_bulk_in_copy_to_guest(USBCCIDState *s, USBPacket *p, + unsigned int max_packet_size) { int len = 0; @@ -1072,10 +1073,13 @@ static void ccid_bulk_in_copy_to_guest(USBCCIDState *s, USBPacket *p) if (s->current_bulk_in != NULL) { len = MIN(s->current_bulk_in->len - s->current_bulk_in->pos, p->iov.size); - usb_packet_copy(p, s->current_bulk_in->data + - s->current_bulk_in->pos, len); + if (len) { + usb_packet_copy(p, s->current_bulk_in->data + + s->current_bulk_in->pos, len); + } s->current_bulk_in->pos += len; - if (s->current_bulk_in->pos == s->current_bulk_in->len) { + if (s->current_bulk_in->pos == s->current_bulk_in->len + && len != max_packet_size) { ccid_bulk_in_release(s); } } else { @@ -1107,7 +1111,7 @@ static void ccid_handle_data(USBDevice *dev, USBPacket *p) case USB_TOKEN_IN: switch (p->ep->nr) { case CCID_BULK_IN_EP: - ccid_bulk_in_copy_to_guest(s, p); + ccid_bulk_in_copy_to_guest(s, p, dev->ep_ctl.max_packet_size); break; case CCID_INT_IN_EP: if (s->notify_slot_change) { |