stm32/usbd_conf: Remove disable of SYSCFG clock.

pi-chm · dpgeorge · commit 767f2ce9a776 · 2022-06-07T18:09:58.000+10:00
System config block contains hardware unrelated to USB. So calling `__SYSCFG_CLK_DISABLE()` during `HAL_PCD_MspDeInit()` has an adverse effect on other system functionality. Removing call to `__SYSCFG_CLK_DISABLE()` to rectify this issue. This call was there since the beginning of the USB CDC code, added in b30c02a.
diff --git a/ports/stm32/usbd_conf.c b/ports/stm32/usbd_conf.c
@@ -215,7 +215,6 @@ void HAL_PCD_MspDeInit(PCD_HandleTypeDef *hpcd) {
     if (hpcd->Instance == USB_OTG_FS) {
         /* Disable USB FS Clocks */
         __USB_OTG_FS_CLK_DISABLE();
-        __SYSCFG_CLK_DISABLE();
         return;
     }
     #endif
@@ -224,7 +223,6 @@ void HAL_PCD_MspDeInit(PCD_HandleTypeDef *hpcd) {
     if (hpcd->Instance == USB_OTG_HS) {
         /* Disable USB FS Clocks */
         __USB_OTG_HS_CLK_DISABLE();
-        __SYSCFG_CLK_DISABLE();
     }
     #endif
 

Original file line number	Diff line number	Diff line change
`@@ -215,7 +215,6 @@ void HAL_PCD_MspDeInit(PCD_HandleTypeDef *hpcd) {`
`215`	`215`	`if (hpcd->Instance == USB_OTG_FS) {`
`216`	`216`	`/* Disable USB FS Clocks */`
`217`	`217`	`__USB_OTG_FS_CLK_DISABLE();`
`218`		`- __SYSCFG_CLK_DISABLE();`
`219`	`218`	`return;`
`220`	`219`	`}`
`221`	`220`	`#endif`
`@@ -224,7 +223,6 @@ void HAL_PCD_MspDeInit(PCD_HandleTypeDef *hpcd) {`
`224`	`223`	`if (hpcd->Instance == USB_OTG_HS) {`
`225`	`224`	`/* Disable USB FS Clocks */`
`226`	`225`	`__USB_OTG_HS_CLK_DISABLE();`
`227`		`- __SYSCFG_CLK_DISABLE();`
`228`	`226`	`}`
`229`	`227`	`#endif`
`230`	`228`