net: openthread: Fix double initialization problem in openthread usb.

Przemyslaw Bida · fabiobaltieri · commit fa590519e266 · 2023-05-19T19:53:21.000Z
nRF52 in case of USB CDC required `CONFIG_USB_DEVICE_INITIALIZE_AT_BOOT=n`
Due to incorrect error check in `otPlatUartEnable`.

Signed-off-by: Przemyslaw Bida &lt;przemyslaw.bida@nordicsemi.no&gt;
diff --git a/modules/openthread/platform/uart.c b/modules/openthread/platform/uart.c
@@ -173,7 +173,7 @@ otError otPlatUartEnable(void)
 		uint32_t dtr = 0U;
 
 		ret = usb_enable(NULL);
-		if (ret != 0) {
+		if (ret != 0 && ret != -EALREADY) {
 			LOG_ERR("Failed to enable USB");
 			return OT_ERROR_FAILED;
 		}

Original file line number	Diff line number	Diff line change
`@@ -173,7 +173,7 @@ otError otPlatUartEnable(void)`
`173`	`173`	`uint32_t dtr = 0U;`
`174`	`174`
`175`	`175`	`ret = usb_enable(NULL);`
`176`		`- if (ret != 0) {`
	`176`	`+ if (ret != 0 && ret != -EALREADY) {`
`177`	`177`	`LOG_ERR("Failed to enable USB");`
`178`	`178`	`return OT_ERROR_FAILED;`
`179`	`179`	`}`