Hello.
On 5/18/2016 2:16 AM, John Youn wrote:
From: Vardan Mikayelyan <[email protected]>
According "Table 9-13" of USB2 Specification
According to.
For full-/high-speed isochronous endpoints, bInterval value
must be in the range from 1 to 16. The bInterval value
is used as the exponent for a 2^(bInterval-1) value;
Signed-off-by: Vardan Mikayelyan <[email protected]>
Signed-off-by: John Youn <[email protected]>
---
drivers/usb/dwc2/core.h | 2 +-
drivers/usb/dwc2/gadget.c | 11 +++++++----
2 files changed, 8 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h
index 1b37164..f0d20d6 100644
--- a/drivers/usb/dwc2/core.h
+++ b/drivers/usb/dwc2/core.h
[...]
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index 7f15bc0..94322e8 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
[...]
@@ -2715,6 +2712,12 @@ static int dwc2_hsotg_ep_enable(struct usb_ep *ep,
if (dir_in)
hs_ep->periodic = 1;
+ if (hsotg->gadget.speed == USB_SPEED_LOW ||
+ hsotg->gadget.speed == USB_SPEED_FULL)
+ hs_ep->interval = desc->bInterval;
+ else if (hsotg->gadget.speed == USB_SPEED_HIGH)
+ hs_ep->interval = 1 << (desc->bInterval - 1);
+
This is asking to be a *switch* statement.
[...]
MBR, Sergei
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