Linux: Translate iso pkt status codes to libusb transfer status codes

* Linux negative errno from iso pkts status must be translated and reported.

diff --git a/libusb/os/linux_usbfs.c b/libusb/os/linux_usbfs.c
index f9fa4cd..d41aac8 100644 (file)
--- a/libusb/os/linux_usbfs.c
+++ b/libusb/os/linux_usbfs.c
@@ -2079,7 +2079,41 @@ static int handle_iso_completion(struct usbi_transfer *itransfer,
                struct usbfs_iso_packet_desc *urb_desc = &urb->iso_frame_desc[i];
                struct libusb_iso_packet_descriptor *lib_desc =
                        &transfer->iso_packet_desc[tpriv->iso_packet_offset++];
-               lib_desc->status = urb_desc->status;
+               lib_desc->status = LIBUSB_TRANSFER_COMPLETED;
+               switch (urb_desc->status) {
+               case 0:
+                       break;
+               case -ENOENT: /* cancelled */
+               case -ECONNRESET:
+                       break;
+               case -ENODEV:
+               case -ESHUTDOWN:
+                       usbi_dbg("device removed");
+                       lib_desc->status = LIBUSB_TRANSFER_NO_DEVICE;
+                       break;
+               case -EPIPE:
+                       usbi_dbg("detected endpoint stall");
+                       lib_desc->status = LIBUSB_TRANSFER_STALL;
+                       break;
+               case -EOVERFLOW:
+                       usbi_dbg("overflow error");
+                       lib_desc->status = LIBUSB_TRANSFER_OVERFLOW;
+                       break;
+               case -ETIME:
+               case -EPROTO:
+               case -EILSEQ:
+               case -ECOMM:
+               case -ENOSR:
+               case -EXDEV:
+                       usbi_dbg("low-level USB error %d", urb_desc->status);
+                       lib_desc->status = LIBUSB_TRANSFER_ERROR;
+                       break;
+               default:
+                       usbi_warn(TRANSFER_CTX(transfer),
+                               "unrecognised urb status %d", urb_desc->status);
+                       lib_desc->status = LIBUSB_TRANSFER_ERROR;
+                       break;
+               }
                lib_desc->actual_length = urb_desc->actual_length;
        }