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Commit 3741fb2c authored by Jack Pham's avatar Jack Pham
Browse files

coresight: byte-cntr: Free USB requests when disconnected 



When receiving USB_QDSS_CONNECT notification, 255 USB requests
are allocated before starting the worker thread to begin writing
to USB QDSS function driver. Conversely when USB_QDSS_DISCONNECT
is received, these requests need to be freed. Without doing so,
besides causing a slow memory leak, the existing requests would get
incorrectly re-used and may fail if the USB endpoint changed due
to a composition switch.

Change-Id: I328e110719fab374827ac69c8b60274f65ec81e2
Signed-off-by: default avatarJack Pham <jackp@codeaurora.org>
parent 5168327a

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

+2 −0
Original line number Diff line number Diff line
@@ -572,6 +572,8 @@ void usb_bypass_notifier(void *priv, unsigned int event, 


	case USB_QDSS_DISCONNECT:

		usb_bypass_stop(drvdata);

		flush_work(&(drvdata->read_work));

		usb_qdss_free_req(tmcdrvdata->usbch);

		break;



	case USB_QDSS_DATA_WRITE_DONE: