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coresight: byte-cntr: Free USB requests when disconnected

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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: Jack Pham <jackp@codeaurora.org>
This commit is contained in:
Jack Pham 2020-10-07 11:48:59 -07:00
commit 3741fb2cfb
1 changed files with 2 additions and 0 deletions
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2
drivers/hwtracing/coresight/coresight-byte-cntr.c
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@ -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: