diff options
Diffstat (limited to 'libusb/sync.c')
| -rw-r--r-- | libusb/sync.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/libusb/sync.c b/libusb/sync.c index 27b5951..146cce2 100644 --- a/libusb/sync.c +++ b/libusb/sync.c @@ -34,10 +34,15 @@ static void LIBUSB_CALL sync_transfer_cb(struct libusb_transfer *transfer) { + usbi_dbg(TRANSFER_CTX(transfer), "actual_length=%d", transfer->actual_length); + int *completed = transfer->user_data; *completed = 1; - usbi_dbg(TRANSFER_CTX(transfer), "actual_length=%d", transfer->actual_length); - /* caller interprets result and frees transfer */ + /* + * Right after setting 'completed', another thread might free the transfer, so don't + * access it beyond this point. The instantiating thread (not necessarily the + * current one) interprets the result and frees the transfer. + */ } static void sync_transfer_wait_for_completion(struct libusb_transfer *transfer) |