diff options
Diffstat (limited to 'recipes/libusb/files/libusb-shortok.patch')
| -rw-r--r-- | recipes/libusb/files/libusb-shortok.patch | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/recipes/libusb/files/libusb-shortok.patch b/recipes/libusb/files/libusb-shortok.patch new file mode 100644 index 0000000000..4e7831af36 --- /dev/null +++ b/recipes/libusb/files/libusb-shortok.patch @@ -0,0 +1,32 @@ +The USBFS_URB_SHORT_NOT_OK flag is valid for IN urbs only. When USB +debugging is enabled in the linux kernel its usb_submit_urb() function +will validate and reject OUT urbs where this flag is set. + +E.g. you will see something like + + usb 1-1.4: BOGUS urb flags, 1 --> 0 + +when sending bulk urbs. + +This patch sets USBFS_URB_SHORT_NOT_OK only for IN urbs. + + +Index: libusb-1.0.6/libusb/os/linux_usbfs.c +=================================================================== +--- libusb-1.0.6.orig/libusb/os/linux_usbfs.c ++++ libusb-1.0.6/libusb/os/linux_usbfs.c +@@ -1360,11 +1360,13 @@ static int submit_bulk_transfer(struct u + + for (i = 0; i < num_urbs; i++) { + struct usbfs_urb *urb = &urbs[i]; ++ int is_out = ((transfer->endpoint & LIBUSB_ENDPOINT_DIR_MASK) ++ == LIBUSB_ENDPOINT_OUT); + urb->usercontext = itransfer; + urb->type = urb_type; + urb->endpoint = transfer->endpoint; + urb->buffer = transfer->buffer + (i * MAX_BULK_BUFFER_LENGTH); +- if (supports_flag_bulk_continuation) ++ if (supports_flag_bulk_continuation && !is_out) + urb->flags = USBFS_URB_SHORT_NOT_OK; + if (i == num_urbs - 1 && last_urb_partial) + urb->buffer_length = transfer->length % MAX_BULK_BUFFER_LENGTH; |