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added checks to prevent calling libusb functions after libusb_close() was called

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This commit is contained in:
matthias.ringwald 2014-06-12 12:22:51 +00:00
parent 24ac29f6b9
commit 176ffe5c52
1 changed files with 10 additions and 1 deletions
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11
src/hci_transport_usb.c
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@ -303,6 +303,8 @@ static void handle_completed_transfer(struct libusb_transfer *transfer){
log_info("usb_process_ds endpoint unknown %x", transfer->endpoint);
}
if (libusb_state != LIB_USB_TRANSFERS_ALLOCATED) return;
if (resubmit){
// Re-submit transfer
transfer->user_data = NULL;
@ -333,7 +335,10 @@ static int usb_process_ds(struct data_source *ds) {
void * next = handle_packet->user_data;
handle_completed_transfer(handle_packet);
// handle case where libusb_close might be called by hci packet handler
if (libusb_state != LIB_USB_TRANSFERS_ALLOCATED) return -1;
// Move to next in the list of packets to handle
if (next) {
handle_packet = (struct libusb_transfer*)next;
@ -591,6 +596,10 @@ static int usb_close(void *transport_config){
case LIB_USB_OPENED:
libusb_exit(NULL);
}
libusb_state = LIB_USB_CLOSED;
handle = NULL;
return 0;
}