Similar to URB's start_frame, add a field start_frame to the usb_request
to report the scheduled (micro)frame number of an isochronous transfer.
This option is useful for debugging purposes.
Signed-off-by: Thinh Nguyen <thinhn@xxxxxxxxxxxx>
---
Change in v2:
- None
include/linux/usb/gadget.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index e5cd84a0f84a..ed9dbbce55ee 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -50,6 +50,7 @@ struct usb_ep;
* @short_not_ok: When reading data, makes short packets be
* treated as errors (queue stops advancing till cleanup).
* @dma_mapped: Indicates if request has been mapped to DMA (internal)
+ * @start_frame: the reported (micro)frame of the scheduled isoc transfer
* @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.
@@ -107,6 +108,8 @@ struct usb_request {
unsigned short_not_ok:1;
unsigned dma_mapped:1;
+ int start_frame; /* ISO ONLY */
+
void (*complete)(struct usb_ep *ep,
struct usb_request *req);
void *context;
--
2.11.0
