diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/usb/gadget.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index 3f572d5dc16d..ab06d2988505 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -118,6 +118,11 @@ struct gsi_channel_info { * by adding a zero length packet as needed; * @short_not_ok: When reading data, makes short packets be * treated as errors (queue stops advancing till cleanup). + * @dma_pre_mapped: Tells the USB core driver whether this request should be + * DMA-mapped before it is queued to the USB HW. When set to true, it means + * that the request has already been mapped in advance and therefore the + * USB core driver does NOT need to do DMA-mapping when the request is + * queued to the USB HW. * @complete: Function called when request completes, so this request and * its buffer may be re-used. The function will always be called with * interrupts disabled, and it must not sleep. @@ -174,6 +179,7 @@ struct usb_request { unsigned no_interrupt:1; unsigned zero:1; unsigned short_not_ok:1; + unsigned dma_pre_mapped:1; void (*complete)(struct usb_ep *ep, struct usb_request *req); |