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Reorder handling of EP control requests,

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This commit is contained in:
Nathan Conrad 2019-09-21 12:02:06 -04:00
parent b6590490a8
commit aebecf169a
1 changed files with 10 additions and 10 deletions
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20
src/device/usbd.c
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@ -499,10 +499,6 @@ static bool process_control_request(uint8_t rhport, tusb_control_request_t const
uint8_t const drv_id = _usbd_dev.ep2drv[ep_num][ep_dir];
TU_ASSERT(drv_id < USBD_CLASS_DRIVER_COUNT);
// Some classes such as TMC needs to clear/re-init its buffer when receiving CLEAR_FEATURE request
// We will forward all request targeted endpoint to its class driver
// - For non-standard request: driver can ACK or Stall the request by return true/false
// - For standard request: usbd decide the ACK stage regardless of driver return value
bool ret = false;
if ( TUSB_REQ_TYPE_STANDARD != p_request->bmRequestType_bit.type )
@ -511,12 +507,6 @@ static bool process_control_request(uint8_t rhport, tusb_control_request_t const
usbd_control_set_complete_callback(usbd_class_drivers[drv_id].control_complete);
}
// Invoke class driver first if available
if ( usbd_class_drivers[drv_id].control_request )
{
ret = usbd_class_drivers[drv_id].control_request(rhport, p_request);
}
// Then handle if it is standard request
if ( TUSB_REQ_TYPE_STANDARD == p_request->bmRequestType_bit.type )
{
@ -552,7 +542,17 @@ static bool process_control_request(uint8_t rhport, tusb_control_request_t const
default: TU_BREAKPOINT(); return false;
}
}
// Some classes such as TMC needs to clear/re-init its buffer when receiving CLEAR_FEATURE request
// We will forward all request targeted endpoint to its class driver
// For class-type requests: must (call tud_control_status(); return true) or (return false)
// For std-type requests: non-std requests codes are already discarded.
// must not call tud_control_status(), and return value will have no effect
// Invoke class driver last, so that EP is already stalled
if ( usbd_class_drivers[drv_id].control_request )
{
ret = ret | usbd_class_drivers[drv_id].control_request(rhport, p_request);
}
return ret;
}
break;