[USB] Fix EPO STALL issue in STM32 USB Device library

fpistm · fpistm · commit 2790e61773ca · 2020-06-04T16:05:27.000+02:00
USB Specification EP0 should never STALL during setup stage.
Device is not properly setup if STALL present.

Signed-off-by: Frederic Pillon &lt;frederic.pillon@st.com&gt;
diff --git a/system/Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_core.c b/system/Middlewares/ST/STM32_USB_Device_Library/Core/Src/usbd_core.c
@@ -444,8 +444,8 @@ USBD_StatusTypeDef USBD_LL_DataInStage(USBD_HandleTypeDef *pdev,
               (pdev->dev_state == USBD_STATE_CONFIGURED))
           {
             pdev->pClass->EP0_TxSent(pdev);
+            (void)USBD_LL_StallEP(pdev, 0x80U);
           }
-          (void)USBD_LL_StallEP(pdev, 0x80U);
           (void)USBD_CtlReceiveStatus(pdev);
         }
       }

Original file line number	Diff line number	Diff line change
`@@ -444,8 +444,8 @@ USBD_StatusTypeDef USBD_LL_DataInStage(USBD_HandleTypeDef *pdev,`
`444`	`444`	`(pdev->dev_state == USBD_STATE_CONFIGURED))`
`445`	`445`	`{`
`446`	`446`	`pdev->pClass->EP0_TxSent(pdev);`
	`447`	`+ (void)USBD_LL_StallEP(pdev, 0x80U);`
`447`	`448`	`}`
`448`		`- (void)USBD_LL_StallEP(pdev, 0x80U);`
`449`	`449`	`(void)USBD_CtlReceiveStatus(pdev);`
`450`	`450`	`}`
`451`	`451`	`}`