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Commit 9f439242 authored by Yuanfang Zhang's avatar Yuanfang Zhang
Browse files

coresight: byte-cnter: Add ETR status check in bypass notifier 



when usb_bypass_notify is called by ush_qdss_close(), no need to
response to USB_QDSS_DISCONNECT event. so add etr status check to
avoid exception.

Change-Id: I4ab5d7f4ba054b0d1ecc7026b5662ddc1c8b5ca1
Signed-off-by: default avatarYuanfang Zhang <zhangyuanfang@codeaurora.org>
parent 8543fd31

drivers/hwtracing/coresight/coresight-byte-cntr.c

+7 −3
Original line number Diff line number Diff line
@@ -553,10 +553,9 @@ void usb_bypass_notifier(void *priv, unsigned int event, 
	if (!drvdata)

		return;



	if (tmcdrvdata->out_mode != TMC_ETR_OUT_MODE_USB

				|| tmcdrvdata->mode == CS_MODE_DISABLED) {

	if (tmcdrvdata->out_mode != TMC_ETR_OUT_MODE_USB) {

		dev_err(&tmcdrvdata->csdev->dev,

		"%s: ETR is not USB mode, or ETR is disabled.\n", __func__);

		"%s: ETR is not USB mode\n", __func__);

		return;

	}
@@ -571,6 +570,11 @@ void usb_bypass_notifier(void *priv, unsigned int event, 
		break;



	case USB_QDSS_DISCONNECT:

		if (tmcdrvdata->mode == CS_MODE_DISABLED) {

			dev_err(&tmcdrvdata->csdev->dev,

			 "%s: ETR is disabled.\n", __func__);

			return;

		}

		usb_bypass_stop(drvdata);

		flush_work(&(drvdata->read_work));

		usb_qdss_free_req(tmcdrvdata->usbch);