diff options
Diffstat (limited to 'drivers/usb/dwc2/gadget.c')
| -rw-r--r-- | drivers/usb/dwc2/gadget.c | 43 |
1 files changed, 23 insertions, 20 deletions
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index c6485ca97656..ca6313101354 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -581,11 +581,11 @@ static unsigned int get_ep_limit(struct dwc2_hsotg_ep *hs_ep) } /** -* dwc2_hsotg_read_frameno - read current frame number -* @hsotg: The device instance -* -* Return the current frame number -*/ + * dwc2_hsotg_read_frameno - read current frame number + * @hsotg: The device instance + * + * Return the current frame number + */ static u32 dwc2_hsotg_read_frameno(struct dwc2_hsotg *hsotg) { u32 dsts; @@ -1467,8 +1467,11 @@ static int dwc2_hsotg_process_req_status(struct dwc2_hsotg *hsotg, switch (ctrl->bRequestType & USB_RECIP_MASK) { case USB_RECIP_DEVICE: - reply = cpu_to_le16(0); /* bit 0 => self powered, - * bit 1 => remote wakeup */ + /* + * bit 0 => self powered + * bit 1 => remote wakeup + */ + reply = cpu_to_le16(0); break; case USB_RECIP_INTERFACE: @@ -2750,19 +2753,19 @@ static void dwc2_gadget_handle_out_token_ep_disabled(struct dwc2_hsotg_ep *ep) } /** -* dwc2_gadget_handle_nak - handle NAK interrupt -* @hs_ep: The endpoint on which interrupt is asserted. -* -* This is starting point for ISOC-IN transfer, synchronization done with -* first IN token received from host while corresponding EP is disabled. -* -* Device does not know when first one token will arrive from host. On first -* token arrival HW generates 2 interrupts: 'in token received while FIFO empty' -* and 'NAK'. NAK interrupt for ISOC-IN means that token has arrived and ZLP was -* sent in response to that as there was no data in FIFO. SW is basing on this -* interrupt to obtain frame in which token has come and then based on the -* interval calculates next frame for transfer. -*/ + * dwc2_gadget_handle_nak - handle NAK interrupt + * @hs_ep: The endpoint on which interrupt is asserted. + * + * This is starting point for ISOC-IN transfer, synchronization done with + * first IN token received from host while corresponding EP is disabled. + * + * Device does not know when first one token will arrive from host. On first + * token arrival HW generates 2 interrupts: 'in token received while FIFO empty' + * and 'NAK'. NAK interrupt for ISOC-IN means that token has arrived and ZLP was + * sent in response to that as there was no data in FIFO. SW is basing on this + * interrupt to obtain frame in which token has come and then based on the + * interval calculates next frame for transfer. + */ static void dwc2_gadget_handle_nak(struct dwc2_hsotg_ep *hs_ep) { struct dwc2_hsotg *hsotg = hs_ep->parent; |